Warmhaus MINERWA 25 COMBI-IE User manual

MINERWA 25/31 COMBI - IE
MINERWA 25 SYSTEM - IE
CONDENSING BOILER USER MANUAL

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MinerWa 25/31 Combi - IE
MinerWa 25 System - IE

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INDEX
1. INTRODUCTION ..........................................................................................................................................4
1.1. GENERAL WARNINGS ................................................................................................................................................4
1.2. GENERAL WARRANTY CONDITIONS....................................................................................................................4
1.3. BOILER GAS CATEGORIES & DESTINATIONS.....................................................................................................6
1.4. GAS LEAKAGES............................................................................................................................................................8
2. USER’S SECTION..........................................................................................................................................9
2.1. GENERAL WARNINGS FOR USER ..........................................................................................................................9
2.1.1. USE OF BOILER ............................................................................................................................................................9
2.1.2. SELECTION OF ON/OFF/STAND-BY AND SUMMER/WINTER MODES..................................................... 10
2.1.3. ON/OFF/STAND-BY POSITIONS............................................................................................................................ 10
2.1.4. OPERATION IN WINTER MODE ...............................................................................................................................11
2.1.5. OPERATION IN SUMMER MODE..............................................................................................................................11
2.1.6. SHUTTING OFF THE BOILER ...................................................................................................................................12
2.2. USE WITH ROOM THERMOSTAT (OPTIONAL)...................................................................................................12
2.3. USE OF OUTSIDE TEMPERATURE SENSOR (OPTIONAL)..............................................................................12
2.4. CUSTOMIZING BOILER FEATURES........................................................................................................................13
2.5. TROUBLESHOOTING..................................................................................................................................................14
2.6. RECOMMENDATIONS FOR ECONOMICAL USE OF ..........................................................................................21
2.7. ISSUES REQUIRED TO BE TAKEN INTO CONSIDERATION FOR WARRANTY CONDITIONS ...............21

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1. INTRODUCTION
Warmhaus was established in 1996 and is an aliate
of Beycelik Holding which produces panel radiators,
high capacity wall hung condensing boilers and steel
panel radiators. Beycelik Holding has also branches in
automotive, energy, tourism and insurance and currently
provides employment opportunities for almost 5.000
people.
We thank you for chosing the Warmhaus boiler to
maintain your heating and domestic hot water comfort
for long years. Warmhaus products are manufactured
in accordance with EU standards and exported to many
countries.
1.1. GENERAL WARNINGS
This book should be carefully protected and referred to
when necessary, as it contains important information
regarding installation and operation of the product.
Please read these instructions fully before operating the
appliance:
Radiator and DHW (Domestic Hot Water )
installations should be performed by a
competent and certified engineering company
in accordance with legal regulations in force.
This appliance must only be installed by a
competent Gas Safe registered engineer and if
in Ireland an RGI (Registered Gas Installer) and
failure to adhere to this could lead to
prosecution.
Natural Gas Installation Project; One of the
dealers authorised by a gas company located
at your city should be preferred for performing
project and etude studies.
In order to enable use of the boiler with LPG
bottles or LPG tanks, conversation of the boiler
should be performed by our authorised
Warmhaus service. Project design and
application for LPG use should be performed by the
company supplying the tank in accordance with local and
legal rules.
1.2. GENERAL WARRANTY
CONDITIONS
Manufacturer company cannot be held
responsble for njury of people, other
lvng thngs (anmals, plants) or damage
to propertes due to nstallaton by
unauthorsed people.
Only the authorised Warmhaus Service is
authorised to make the electrical connection of
boiler and supplying electricity to the boiler.
The maintenance and repairs as the result of failure of
the product within the warranty period due to material,
production and installation errors shall be performed as
free of charge without claiming any workmanship costs
and spare part payments.
The intended use for this appliance is to heat
water and supply DHW in domestic premises.
Always refer to the appliance data badge for correct
specifications and ensure the boiler is operating within
the safety settings outlined by Warmhaus.
Do not modify our flue system, and always use only the
Warmhaus approved flue with this appliance.
Ensure Warmhaus original flue components including
seals and gaskets are used for the installation of this
appliance.
The installation of the appliance and controls must be
done in accordance to the current Gas Safety (Installation
and Use) Regulations
Any intervention on a sealed component is
forbidden.
Maintenance and repairment of the appliance
must only be carried out by a competent Gas
Safe registered engineer and if in Ireland an
RGI (Registered Gas Installer)
Children must not operate the boiler.

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These installation instructions only apply to GB
and IE and must be adhered to with the
exception of all statutory regulations
Boilers bear CE mark in accordance with below given
directives:
- Gas Appliances Directive 2009/142/EC
- Boiler Eciency Directive 92/42/EEC
- Low Voltage Directive 2014/35/EU
- Electromagnetic Compatibility Directive 2014/30/EU
Please visit the below given web site of Warmhaus for
acquiring more detailed information regarding legal
regulations on installation of gas fired heating devices:
www.warmhaus.com
Manufacturer: WARMHAUS Isıtma ve Soğutma Sistemleri
Tic. A.Ş. Bursa Işıktepe OSB Mah. Park Cad. No:10 16140
Nilüfer-Bursa / Türkiye
WARMHAUS
Warmhaus Authorised Technical Service Centres maintain
an assurance regarding quality and professionalism.
WARMHAUS is not responsible for damages arising from
repairs, part replacements and maintenances performed
by third persons and companies and product remains out
of the warranty scope under such conditions.
WARMHAUS A.Ş. reserves the rght to make all
knds of techncal and commercal amendments
wthout gvng nformaton and rejects all
responsbltes dependng on msspellng.
1015

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1.3. BOILER GAS CATEGORIES & DESTINATIONS
Appliance
Categories Gas Type
Gas Inlet
Supply
Pressures
Used Gas
Countries of
Destination
**
I 2H Natural Gas 20 mbar G20 AT, BG, CH, CZ, DK, EE, ES, FI, GB, GR, HR, IE, IT, LT, LU, LV, NO, PT,
RO, SE, SI, SK, TR
I 2H Natural Gas 25 mbar G20 HU
I 2E Natural Gas 20 mbar G20 DE, LU, PL, RO
I 2E+ Natural Gas 20 mbar G20 BE, FR
I 2E(S) Natural Gas 20 mbar G20 BE
I 2ELL Natural Gas 20 mbar G20 DE
II 2H3P Natural Gas 20 mbar G20 CH, CZ, ES, GB, GR, HR, IE, IT, LT, PT, RO, SI, SK
II 2H3+ Natural Gas 20 mbar G20 CH, CY, CZ, ES, GB, GR, IE, IT, LT, PT, SI, SK, TR
II 2E+3+ Natural Gas 20 mbar
25 mbar G20 BE, FR
II 2E+3P Natural Gas 20 mbar
25 mbar G20 BE, FR
II 2H3B/P Natural Gas 20 mbar G20 AT, CH, CY, CZ, DK, EE, FI, GR, IT, LT, NO, RO, SE, SI, SK
II 2E3B/P Natural Gas 20 mbar G20 DE
II 2ELL3B/P Natural Gas 20 mbar G20 DE
I 2L Natural Gas 25 mbar G25 NL
I 2E+ Natural Gas 25 mbar G25 BE, FR
I 2ELL Natural Gas 20 mbar G25 DE
II 2L3P Natural Gas 25 mbar G25 NL
II 2L3B/P Natural Gas 25 mbar G25 NL
II 2ELL3B/P Natural Gas 20 mbar G25 DE
I 3+ Buthane Gas 28-30 mbar
37 mbar G30 BE, CH, CY, CZ, ES, FR, GB, GR, IE, IT, LT, PT, SI, SK
I 3B/P Buthane Gas 30 mbar G30 BE, CY, CZ, DK, EE, FI, GB, GR, HU, HR, IT, LT, NL, NO, RO, SE, SI,
SK, TR
I 3B/P Buthane Gas 50 mbar G30 AT, CH, DE, FR, SK
Gas categories for Warmhaus boilers applied on CE certification on SZU Test / BRNO are given bellow;
- the appliance category(ies) in relation to the direct countries of destination has been specified EN 15502-1; GAR Certificate E-30-00300-18
product ID Nr. CE-1015CT0615
- the country(ies) of destination, in accordance with EN ISO 3166-1;
- the gas supply pressure in millibars, if several normal pressures can be used for the same gas group. They are indicated by their numerical
value and the unit “mbar”

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Appliance
Categories Gas Type
Gas Inlet
Supply
Pressures
Used Gas
Countries of
Destination
**
II 2H3+ Buthane Gas 28-30 mbar
37 mbar G30 CH, CY, CZ, ES, GB, GR, IE, IT, LT, PT, SI, SK, TR
II 2E+3+ Buthane Gas 28-30 mbar
37 mbar G30 BE, FR
II 2H3B/P Buthane Gas 30 mbar G30 CY, CZ, DK, EE, FI, GR, IT, LT, NO, RO, SE, SI, SK
II 2H3B/P Buthane Gas 50 mbar G30 AT, CH, SK
II 2E3B/P Buthane Gas 50 mbar G30 DE
II 2L3B/P Buthane Gas 30 mbar G30 NL
II 2ELL3B/P Buthane Gas 50 mbar G30 DE
I 3P Propane LPG 37 mbar G31 BE, CH, CZ, ES, FR, GB, GR, HR, IE, IT, LT, NL, PL, PT, SI, SK, TR
II 2H3P Propane LPG 37 mbar G31 CH, CZ, ES, GB, GR, HR, IE, IT, LT, PT, RO, SI, SK
II 2L3P Propane LPG 37 mbar G31 NL
II 2E+3P Propane LPG 37 mbar G31 BE, FR
II 2E+3P Propane LPG 37 mbar G31 BE, FR
** EN 437+A1:2009, Codes for the representation of gases and names of countries and their subdivisions; Part 1: Country codes (ISO 3166-
1:2006)

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IF YOU SMELL GAS: .
1.4. GAS LEAKAGES
DURING EMERGENCIES
INFORMATION: You can vst web stes of local gas authortes and
NATURAL GAS EMERGENCY sectons.
Advce: Please take note local emergency phone numbers.
AMBULANCE POLICEFIRE
DEPARTMENT
NATURAL GAS
EMERGENCY
Do not use lghters
/ matches, do not
smoke.
Turn o the gas
supply at the
gas meter or
an approprate
emergency control
valve
Immedately
evacuate the place
Call the Natonal
Gas Emergency
Servce –
0800111999
or n Ireland 1850
20 50 50
Do not make any
nterventon on
nstallaton.
Never close vent
covers ensurng
dscharge of the
gas from the
envronment n
case of a natural
gas leakage.
Do not use the
door bell.
Do not use moble
phones
Do not operate
electrc
swtches or unplug
any applances.
Ventlate the
envronment and
prevent people
from enterng the
property

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2. USER’S SECTION
2.1. GENERAL WARNINGS FOR USER
2.1.1. Use of boiler
Commissioning of the appliance should be done by the
Warmhaus Authorised Service for your safety and to
prevent voiding the appliance warranty. Our Authorised
Service will give you required information about use of
the boiler after performing initial controls and starting for
the first time.
Perform below gven controls pror to use:
• Ensure that radiator/heating system, tap water and
gas valves located in your boiler are open, the heating
system pressure is between 1 - 1,5 bar and system air is
discharged,
• Gas is available in your gas line (you can control by
igniting one of your gas ovens),
• Boiler electrical fuse is open,
• Make sure there are no combustible materials within
the immediate vicinity of the appliance or any corrosive
chemicals that can damage the appliance.
• Ensure all flue connections are correctly made, the flue
system is correctly supported and there’s no blockage
in the flue system
• If a room thermostat or control device is connected,
ensure that it is at ON position.
Our boiler has a built in frost protection (as long as the
appliance is ON and gas provided) for the system water
contained within the boiler only, so provisions need to
be installed to protect the system pipe work in unheated
areas.
Turn OFF the boiler before any maintenance and repair
action.
Follow below gven man rules:
• Do not clean external frame of boiler while is
functioning and do not use easily flammable materials.
• Do not touch electricity cables.
• In case cables are damaged, the boiler and fuse
switches and do not use the boiler.
• Electrical cables of boiler and its accessories should be
replaced by the Authorised Service.
• Do not expose the boiler to direct vapour those may
arise from cooking places.
Safety:
In your own interest, and that of safety, it is the law that
this boiler must be installed by a Gas Safe Registered In
IE, the installation must be carried out by a Registered
Gas Installer (RGII) and installed in accordance with the
current edition of I.S. 813 “Domestic Gas Installations”,
the current Building Regulations and reference should be
made to the current ETCI rules for electrical installation.
It is essential that the instructions in this booklet are
strictly followed, for safe and economical operation of the
boiler.
Important Notes:
• This appliance must not be operated without the
casing correctly fitted and forming an adequate seal.
• If the boiler is installed in a compartment then
the compartment MUST NOT be used for storage
purposes.
• If it is known or suspected that a fault exists on the
boiler then it MUST NOT BE USED until the fault has
been corrected by a Gas Safe Registered Engineer or
in IE a Registered Gas Installer (RGII).
• Under NO circumstances should any of the sealed
components on this appliance be used incorrectly or
tampered with.
• This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision
or instructions concerning use of the appliance by a
person responsible for their safety.
• Children should be supervised to ensure that they do
not play with the appliance. In cases of repeated or
continuous shutdown a Gas Safe Registered Engineer
or in IE a Registered Gas Installer (RGII) should
be called to investigate and rectify the condition
causing this and carry out an operational test. Only
the manufacturer’s original parts should be used for
replacement.

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1. MODE, selection button.
2. RESET button.
3. Radiator (CH) water temperature increasing button.
4. Radiator (CH) temperature decreasing button.
5. Digital display screen
6. Domestic Hot Water temperature increasing button.
7. Domestic Hot Water temperature decreasing button.
8. Boiler actual power indicator
9. Radiator (CH) water actual temperature
10.Radiator (CH) mode operating indicator
11. Domestic Hot Water actual temperature
12. Domestic Hot Water operating indicator
13. Comfort mode operation
14. Failure status RESET requirement.
15. External Weather Temperature Sensor connection
16. Digital manometer
17. Failure code.
18. Room thermostat (OpenTherm-OT) connection
indicator
The temperature value displayed on the digital screen has
a ± 3 °C tolerance depending on environmental conditions
not arising from the boiler. Screen of MinerWa 25 boiler
model consist of amber coloured backlight LCD screen
and 6 touch sensitive buttons : RESET, MODE, CH (+), CH
(-), DHW (+), DHW (-).
Fgure 1 Control panel of MnerWa 25 Comb Boler
Fgure 2 Control Panel wth Touch Screen of MnerWa
25 Boler
2
5
74
3 61
13
16
18
9
8
14
10
15 12
11
17
RESET: It s used for resettng the falure (f temporary)
re-startng the boler
MODE: Used for Winter/Summer/OFF mode adjustment.
Operatng modes and related notfcatons:
OPERATING MODES EXPLANATIONS:
• OFF
•WINTER►Radator temperature + °C + tap + radator
s dsplayed.
• SUMMER►Radiator temperature + °C + tap is
displayed.
• CH ON►Radiator Temperature + °C + tap + flashing
radiator (symbol) is displayed.
• DHW ON►DHW temperature + °C + flashing tap
(symbol) is displayed.
• CH FROST PROTECTION►Radiator temperature
• °C + flashing radiator (symbol) + when boiler is ignited
flame (symbol) is displayed.
• DHW FROST PROTECTION►CH temperature + °C
flashing radiator and tap (symbol) + when boiler
ignited flame (symbol)
• CH/DHW SETTING CHANGE►CH adjustment change
will be activated when radiator symbol rapidly flashes.
DHW adjustment change will be activated when tap
symbol rapidly flashes.
CH: Central Heatng
DHW: Domestc Hot Water
2.1.2. Selection of On/O/Stand-by and
Summer/Winter Modes
The boiler panel does not have ON/OFF button. The
boiler must be turned on/o by using the V circuit breaker
to be connected to the boiler circuit.
2.1.3. On/O/Stand-by Positions
The boiler panel does not have ON/OFF button. The
boiler must be turned on/o by using the V circuit breaker
connected to the boiler circuit.

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2.1.5. Operation in Summer Mode
Boiler only operates for heating the domestic hot water in
this mode. In order to switch to summer mode;
Domestc Hot Water Adjustment
at Wnter Position; You can adjust
the hot tap water temperature
value between 35 –60 °C with (6)
and (7) numbered buttons under
the RESET button. LCD screen
backlight is turned ON during
temperature change, °C and
symbol flashes besides the DHW
temperature value. LCD screen
backlight is turned OFF after
adjustment.
In this mode you can adjust the
Domestic Hot Water temperature
between 35 – 60 °C with (7)
and (8) numbered buttons.
2.1.4. Operation in Winter Mode
In winter mode, boiler operates both for heating the
environment and providing Domestic Hot Water.
Radiator (CH) temperature adjustment is made with
(3) and (4) numbered buttons in Figure 1 Domestic Hot
Water temperature adjustment is made with (6) and (7)
numbered buttons and this temperature is indicated with
(9) numbered indicator for Radiator (CH) and with (11)
numbered indicator for Domestic Hot Water.
In such case, combi boiler initially
gets into Radiator position, its
symbol flashes on the left
bottom corner of screen and
tap symbol is seen at right
bottom corner. A digital manometer indicating the system
pressure is located at lower middle section of the screen
and also existing radiator system temperature is seen on
the screen at the same time and screen light is turned o.
When boiler is started, flame modulation symbol is seen
at the middle section of the screen. At that position, you
can increase and decrease the temperature
with CH temperature adjustment buttons (see. Figure
1) (3) between 35 – 80 °C, screen lights when buttons
are pressed and °C symbol flashes besides the CH
temperature value.
If you are starting the combi for
the first time hold MODE button,
and release the button after the
cycle is completed on the
screen, initially boiler switches
to radiator position, its symbol
will flash on left top corner
of the screen existing radiator
installation temperature and
screen light will turn o.
In order to summer mode hold
MODE button and release the
button after completion of cycle
on the screen. At that position,
symbol flashes at right
bottom corner of the screen and
existing tap water temperature
will be seen on the screen and
LCD screen backlight is turned
OFF.
If you have a floor heating system, as our
Authorised Service adjust your boiler for
“Low Temperature Operaton”, maximum
temperature shall be limited with the
Radiator (CH) temperature adjustment button (3) (e.g.
maximum 47 °C).
When the boiler is started for
the first time, screen displays
nG letter and then a number
(for instance 25) indicating kW
power of the device.
Then, OFF letter is displayed,
and LCD screen backlight is
turned OFF. Now, boiler is at
STANDBY position.
LCD screen backlight is turned ON during temperature
change, °C symbol flashes besides the DHW temperature
value. Adjustment value is confirmed after backlight is
turned OFF following the adjustment.

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2.1.6. Shutting o the Boiler
To set the boiler to OFF position while it is in SUMMER
position;
To set the boiler to OFF mode while it is in WINTER;
Press and hold MODE button and
release the button after cycle on
the screen is completed,
will be displayed on the
screen, backlight is turned OFF,
now the boiler is in OFF mode.
Press and hold MODE button and
release the button after cycle on
the screen is completed,
boiler will switch to SUMMER
mode.
Then, when the same
transaction is repeated, after
cycle is completed will be
displayed on backlight is turned
OFF boiler is now at STANDBY
position.
2.2. USE WITH ROOM THERMOSTAT
(OPTIONAL)
This product can be used together with a room
thermostat which can be purchased separately as an
accessory. All Warmhaus thermostats can be connected
with dual-wired cables. Carefully read user’s and
installation instructions given in the Accessory set. When
connected to a room thermostat, the appliance can be
operated based on requested room temperature. With
certain models of control units, you may run your boiler
on a daily / weekly programme.
General Utlsaton Type
• Please consult our authorised services for room
thermostats compatible with Warmhaus boilers.
• Do not remove device components during operation.
• Do not place the boiler in a position allowing direct
sunlight exposure or near heat sources.
• Manufacturer company shall not be responsible for
below given situations:
a) Faulty installation
b) Making intervention on the device by unauthorised
persons
c) Failing to follow instructions given in this book and
room thermostat booklets
Room thermostat should be installed at 1,50 m
height from ground.
At least 30 cm distance should be available
from doors and windows open for air
circulation.
Installaton nstructon: Device installation shall only be
performed by the Warmhaus Authorised Service. The
dual cable required for installation is supplied by the
dealer/consumer.
Fgure 3 Thermostat poston
150 cm
Min.
30 cm
Mantenance and Servce Lfe: Warmhaus room
thermostat should not come into contact with water or
excessive humidity. Unless an external damage occurs,
the room thermostat does not require any maintenance.
2.3. USE OF OUTSIDE TEMPERATURE
SENSOR (OPTIONAL)
This product can be used together with a weather
compensation kit which can be purchased separately as
an accessory.
When connected to a weather compensation kit, the
appliance runs with reference to the weater temperature,
based on selected heating curve. Available heating curves
are given in figure 5.

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After connecting the weather compensation kit,
adjustment is made according to average external weather
temperature of your province with P04 parameter. Our
authorised service will make this adjustment during
installation.
(P21) Low temperature regon selecton.
This parameter should be adjusted as 1 for ground heating
or heating systems operating with low temperature. 0
(zero) value is selected for radiator systems to operate at
high temperatures as standard.
(P24) Chld Protecton
This feature is disabled as default factory setting (0).
Child Protection (key-lock) is enabled when parameter is
adjusted to 1. Keys are locked after 2 minutes following
use when the feature is enabled. Key-lock is released
when the MODE button is hold until cycle is completed
for getting o the child protection
For other functions / parameters to customize your boiler,
please refer to the installation & service manual.
Deareaton Functon
The boiler has to be switched to OFF mode first. It is
possible to activate deaeration function pressing RESET
and ”-“ for circle time.
“Ar” wll be dsplayed on the screen. Boler wll
start the Deareaton functon.
During this function pump and 3-way valve are activated/
deactivated in order to have deaeration of the hydraulic
plant.
This function ends pushing again RESET and ”-“ for circle
time or at the end of deaeration time: 12 minutes.
Fgure 4 Boler controlled by weather compensaton kt
Fgure 5 Heatng curves for weather compensaton kt
Fgure 6 Endng the dearaton functon
20
,0
30
,0
40
,0
50
,0
60
,0
70
,0
80
,0
-25-20-15-10-505101520
K=0,75
K=1,5
K=2,2K=3K=4,5K=6K=9
Boler Setpont °C
Outsde Temperature °C
2.4. CUSTOMIZING BOILER
FEATURES
As your boiler has an advanced electronic card, operation
conditions and certain parameters related with your
preferences may be changed by our Authorised Service.
Please consult our authorised service when any changes
requested in below given parameters.
(P07) Power Ramp-Up Tme.
When boiler starts, there’s a ramp-up time for reaching
requested power from minimum power and this is set as
10 minutes as default. This value can be set from 0 to 80
corresponding to 0 - 800 seconds.
(P08) Central Heatng Power.
The maximum Central Heating power can be adjusted by
this parameter.

14 warmhaus.com
Error
Code
Descrpton of the
Error Malfuncton Probable Cause Soluton(s)
E 01 Interventon of
exhaust Thermostat
Boler does not
work, E01 error
code flashng on
the screen
> Flue Sensor faulty 1) Reset & Restart boler
2) Call for authorsed servce
E 02 Low water pressure
n the system/
system parameter
wrongly setted
Boler does not
work, E02 error
code flashng on
the screen
> Water pressure n
the boler too low
1) Fll the boler 1,2-1,5 bar accordng to
manual
2) Check f the system pressure 1,2 - 1,5 bar
from the LCD Screen
3) Reset & Restart boler
4) If problem persst Call for authorsed
servce
E 03 Hgh water pressure
n the system
Boler does not
work, E03 error
code flashng on
the screen
> Hgh Water
pressure n the
boler ( > 2,8 bar )
1) Frst check the fllng tap of the boler
and make sure t s closed.
2) Durng boler operaton, the safety valve
may contnue to dran water so make sure
that t s connected to a dran lne.
3) If your plumbng lne has a dran cock;
frst turn the boler o and let the pressure
drop to 1-1.5 bar, then swtch t on agan.
4) If the pressure ncrease occurs agan,
call an authorsed servce.
E 04 Domestc hot water
temperature sensor
faulty
Boler does not
work n DHW mode
but stll operatonal
n Central heatng
mode, E04 error
code flashng on
the screen
> Domestc heatng
water temperature
sensor faulty
1) Call for authorsed servce
E 05 Central heatng
FLOW temperature
sensor faulty
Boler does not
work, E05 error
code flashng on
the screen
> Central heatng
FLOW temperature
sensor faulty
1) Reset & Restart the boler
2) Call for authorsed servce f problem
perssts
E 06 No gnton Boler does not
work, E06 error
code flashng on
the screen
> Gas supply falure 1) Reset & Restart the boler
2) Check boler central heatng valves are
open f they are closed open all
3) Check all radator valves are open f
they are closed. Mnmum 3 meters of
radator must be open
4) RESET boler and check f problem s
resolved.
5) Call for authorsed servce
E 07 Safety thermostat
nterventon
Boler does not
work, E07 error
code flashng on
the screen
> Lack of water n
the system
> Pump blockage
> Pump falure
> Pump harness
> Installaton
blockage
1) RESET boler check f problem s
resolved
2) Check boler central heatng valves are
open f they are closed open all
3) Check all radator valves are open f
they are closed. Mnmum 3 meters of
radator must be open
4) RESET boler and check f problem s
resolved
5) Call for authorsed servce
2.5. TROUBLESHOOTING

15
warmhaus.com
Error
Code
Descrpton of the
Error Malfuncton Probable Cause Soluton(s)
E 08 Flame crcut falure False flame sgnal
from combuston or
electrode
> Condensate
Syphon blocked
> Electronc board
1) Call for authorsed servce
E 09 No water crculaton
n the system
Boler does not
work, E09 error
code flashng on
the screen
> Lack of water n
the system
> Pump blockage
> Pump falure
> Pump harness
> Installaton
blockage
1) RESET boler at frst check f problem s
resolved.
2) Check boler central heatng valves are
open f they are closed open all
3) Check all radator valves are open f
they are closed. Mnmum 3 meters of
radator must be open
4) RESET boler and check f problem s
resolved
5) Call for authorsed servce
E 11 Gas valve
modulator
dsconnected
Boler does not
work, E11 error code
flashng on the
screen
> Gas valve harness 1) Call for authorsed servce
2) Check gas valve between board and
gas valve
E 13 Exhaust
temperature probe
over-temperature
alarm
Boler does not
work, E13 error
code flashng on
the screen
> Over temperature
flue gas outlet
value > 105 C°
1) Call for authorsed servce
E 14 Exhaust ( FLUE )
temperature probe
fault
Boler does not
work, E14 error
code flashng on
the screen
> Central heatng
FLUE temperature
sensor faulty
1) Reset & Restart boler
2) Call for authorsed servce
E 15 Fan falure
(feedback/supply)
Boler does not
work, E15 error
code flashng on
the screen
> Fan harness 1) Reset & Restart boler
2) Call for authorsed servce
E 16 Central heatng
temperature
RETURN sensor
faulty
Boler does not
work, E16 error
code flashng on
the screen
> Central
heatng RETURN
temperature sensor
faulty
1) Reset & Restart boler
2) Call for authorsed servce
E 17 Temperature
derence between
FLOW and LIMIT
NTC (Double
Heatng Probe)
faulty
FLOW and LIMIT
sensor (DOUBLE
NTC) malfuncton
> FLOW and LIMIT
Sensor ( double
NTC ) faulty
1) Reset & Restart boler
2) Call for authorsed servce
E 19 Water flow meter
nput readng
Lack of domestc
heatng water on
request
Wrong parameters
settled on TsP
menu
1) Call for authorsed servce at frst
2) Only authorsed servce must adjust TsP
Parameter P01=0 wth defalut value
E 20 CH vertemperature,
Temperature
Central Heatng >
TSP 81 value °C
Boler does not
work, E81 error
code flashng on
the screen
> Lack of water on
the system
> Pump blockage
> Pump falure
> Pump harness
> Installaton
blockage
1) RESET boler at frst check f problem s
resolved.
2) Check boler central heatng valves are
open f they are closed open all
3) Check all radator valves are open f
they are closed. Mnmum 3 meters of
radator must be open
4) RESET boler and check f problem s
resolve
5) Call for authorsed servce

16 warmhaus.com
Error
Code
Descrpton of the
Error Malfuncton Probable Cause Soluton(s)
E 21 Delta Temperature
Central Heatng
flow and Return >
TSP 82 value °C
Boler does not
work, E21 error
code flashng on
the screen
> Lack of water on
the system
> Pump blockage
> Pump falure
> Pump harness
> Installaton
blockage
1) RESET boler at frst check f problem
removed
2) Check boler central heatng valves are
open f they are closed open all
3) Check all radator valves are open f
they are closed. Mnmum 3 meters of
radator must be open
4) RESET boler and check f problem
resolved
5) Call for authorsed servce
E 28 Maxmum allowed
consecutve lock-
out reset reached
Usable RESET
number reached.
Too many
consecutve
lock-out falures
(followed by
reset) due to other
possble causes
1) Turn OFF the power of the applance.
Reset wll be allowed after turnng ON the
power.
2) Check the root cause of Error to solve
3) If fault stll perssts call for authorsed
servce
E 37 Low voltage
anomaly
Boler does not
work, E37 error
code flashng on
the screen
Low voltage < 165
VAC +/- 5%
on the supply
network durng
normal operaton
OR < 182 VAC +/-
5% durng Au-TO
calbraton mode
1) Call for Electrcal supply network
provder
2) Error wll remove f supply voltage > 170
VAC +/- 5%
3) If ths falure s observed durng
calbraton calbraton can not be complete
unless supply voltage > 188 VAC +/- 5%
E 40 Wrong network
frequency
survey
Boler does not
work, E40 error
code flashng on
the screen
Wrong frequency of
the electrc supply
network. Value out
of tolerance, 50 Hz
+/- 5%
1) Call for Electrcal supply network
provder
2) Error wll remove f supply frquency 50
Hz +/- 5%
E 41 Loss of flame more
than 6 successve
tmes
Boler does not
work, E41 error
code flashng on
the screen
> Too many
domestc hot water
request n short
perod ( 1 mn )
> Low gas pressure
1) Call for authorsed servce at frst
E 42 Buttons anomaly Boler does not
work, E42 error
code flashng on
the screen
Wrong parameters
settled on TsP
menu
1) Call For authorsed servce.
E 43 Opentherm
Communcaton
error
Boler does not
work, E43 error
code flashng
on the screen
after 1 mnute of
communcaton
error
Opentherm lne
dsconnected
1) Remove energy from boler and re
energze E43 wll be removed and boler &
buttons wll get back to functonal
2) Replace the room unt batteres wth
the fresh ones and reset from room unt
3) Check cablng between boler and room
unt and re connect f any dsconnecton,
f connecton set up succesfully then
connecton symbol wll be actvated on
the screen
4) Call for authorsed servce to re connect
openterm connecton

17
warmhaus.com
Error
Code
Descrpton of the
Error Malfuncton Probable Cause Soluton(s)
E 44 Cumulated
ntermttent
gnton wthout
reachng
burner gnton.
Boler does not
work, E44 error
code flashng on
the screen
> Intermttent
contacts on harness
> Hammer eect on
water net
> Too many
requests n short
tme
1) Reset & Restart boler
2) Call for authorsed servce
E 62 Calbraton request Boler does not
work, E62 error
code flashng on
the screen
> Calbraton not
done
> Replacng board
but not servce
key from the old
board (PCB)
> Servce key
damaged or
dsconnected
> Updatng
Software
1) Call For authorsed servce
E 72 Delta T heatng
at gnton not
occurred
Boler does not
work, E72 error
code flashng on
the screen
> FLOW OR
RETURN Sensor
not n
poston
1) Call for authorsed servce at frst
2) Check RETURN and FLOW sensor on
poston.
E 74 Second CH
temperature Probe
faulty
Boler does not
work, E74 error
code flashng on
the screen
> FLOW and LIMIT
Sensor (double NTC
) faulty
1) Reset & Restart boler
2) Call for authorsed servce.
E 77 Absolute current
values reached
Boler does not
work, E77 error
code flashng on
the screen
> Gas nlet pressure
> Agng or rust on
the electrode
> Recrculaton of
exhaust gas nto
fresh ar
> Blockage n flue
or wrong flue
> Electrode poston
> Cablng
dsconnectons
> Combuston
calbraton
> Electronc board
> Gas valve falure
1) Call for authorsed servce
E 78 Max regulaton
current value
reached
Boler does not
work, E78 error
code flashng on
the screen
> Gas nlet pressure
> Agng or rust on
the electrode
> Recrculaton of
exhaust gas nto
fresh ar
> Blockage n flue
or wrong flue
> Electrode poston
> Cablng
dsconnectons
> Combuston
calbraton
> Electronc board
> Gas valve falure
1) Call for authorsed servce

18 warmhaus.com
Error
Code
Descrpton of the
Error Malfuncton Probable Cause Soluton(s)
E 79 Mn regulaton
current value
reached
Boler does not
work, E79 error
code flashng on
the screen
> Gas nlet pressure
> Agng or rust on
the electrode
> Recrculaton on
fluegas path
> Blockage n flue
or wrong flue
> Electrode poston
> Cablng
dsconnectons
> Combuston
calbraton
> Electronc board
> Gas valve falure
1) Call for authorsed servce
E 80 Problem on
electronc gas
valve drver
Boler does not
work, E80 error
code flashng on
the screen
> Electronc board
> Gas valve falure
1) Call for authorsed servce
E 81 Lock-out for
combuston
problem at startng
(1)
Boler does not
work, E81 error
code flashng on
the screen
> Strong flue
blockage
> Combuston
problem
> Wrong flue
> Gas nlet pressure
> Agng or rust on
the electrode
> Recrculaton of
exhaust gas nto
fresh ar
> Electrode poston
> Combuston
calbraton
1) Call for authorsed servce
E 84 Capacty reducton
for detected
(supposed) low gas
nlet pressure
Boler operates at
lmted capacty,
E84 error code
flashng on the
screen
> Gas nlet pressure
> Combuston
problem
1) If there s strong wnd wat untl the
wnd stop then RESET the boler
2) IF problem persst Call for authorsed
servce
E 87 Problem on
electronc gas
valve crcut
Boler does not
work, E87 error
code flashng on
the screen
> Cablng
dsconnectons
> Gas valve falure
1) Call for authorsed servce
E 88 Fault of electronc
gas valve managng
crcut
Boler does not
work, E88 error
code flashng on
the screen
> Cablng
dsconnectons
> Gas valve falure
1) Call for authorsed servce

19
warmhaus.com
Error
Code
Descrpton of the
Error Malfuncton Probable Cause Soluton(s)
E 89 Problem on
combuston
feedback sgnal
Boler does not
work, E89 error
code flashng on
the screen
> Agng or rust on
the electrode
> Recrculaton of
exhaust gas nto
fresh ar
> Blockage n flue
or wrong flue
> Electrode poston
> Cablng
dsconnectons
> Combuston
calbraton
> Electronc board
> Gas valve falure
1) Call for authorsed servce
E 90 Unable to regulate
combuston
Boler does not
work, E90 error
code flashng on
the screen
> Agng or rust on
the electrode
> Recrculaton of
exhaust gas nto
fresh ar
> Blockage n flue
or wrong flue
> Electrode poston
> Cablng
dsconnectons
> Combuston
calbraton
> Electronc board
> Gas valve falure
1) Call for authorsed servce
E 92 Ar compensaton
actve
Boler does not
work, E92 error
code flashng on
the screen
> Possble wnd
precence
> Agng or rust on
the electrode
> Recrculaton of
exhaust gas nto
fresh ar
> Blockage n flue
or wrong flue
> Electrode poston
> Combuston
calbraton
> Mn power
adjustment
1) Call for authorsed servce
E 93 Unable to regulate
combuston
(temporarly)
Boler does not
work, E93 error
code flashng on
the screen
> Agng or rust on
the electrode
> Recrculaton of
exhaust gas nto
fresh ar
> Blockage n flue
or wrong flue
> Electrode poston
> Combuston
calbraton
> Gas valve falure
> Electronc board
1) Call for authorsed servce

20 warmhaus.com
Error
Code
Descrpton of the
Error Malfuncton Probable Cause Soluton(s)
E 94 Possble low gas
pressure or exhaust
recrculaton
Boler does not
work, E94 error
code flashng on
the screen
> Gas nlet pressure
LOW
> Recrculaton of
exhaust gas nto
fresh ar
> Blockage n flue
or wrong flue
> Agng or rust on
the electrode
> Electrode poston
> Combuston
calbraton
> Gas valve falure
> Electronc board
1) Call for authorsed servce
E 95 Intermttent
combuston value
Boler does not
work, E95 error
code flashng on
the screen
> Harness on
electrode and earth
> Agng or rust on
the electrode
> Electrode poston
> Combuston
calbraton
1) Call for authorsed servce
E 96 Flue or ar sucton
way blockage
Boler does not
work, E96 error
code flashng on
the screen
> Blockage n flue
> Blockage n ar
sucton path
1) Call for authorsed servce
E 98 SW error, board
start-up error fault
Boler does not
work, E98 error
code flashng on
the screen
> Boler software
problem
1) Call for authorsed servce
E 99 Generc fault Boler does not
work, E99 error
code flashng on
the screen
> Boler electronc
hardware problem
1) Reset & Restart boler
2) Call for authorsed servce
(1) Call the Authorised Service if failure continues.
(2) 81 numbered failure corresponds any blocking in the exhaust gas pipe. In such case, you should consult the
authorised service technician before re-starting the boiler.