Glowworm Envirosorb 8 User manual

To b e l e f t w i t h t h e u s e r
www.glow-worm.co.uk
Instructions for Use
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Air / Water Heat Pump
Envirosorb

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2
Customer service call: 01773 828100 Technical helpline: 01773 828300
General and Sales enquiries Tel: [phone] Fax: [phone]
• Do not insert ngers or objects in the air inlets and outlets while the unit is operating as the high speed fan
can cause injuries.
• Do not cover the heat pump.
• Do not use water to clean the unit, refer to 2.1.
• Disconnect the power source when cleaning the unit, this will avoid the risk of short-circuiting or injury.
• Do not dismantle the heat pump, exposing the fan or internal parts can be very dangerous.
• This appliance contains metal parts (components) and care should be taken when handling and cleaning,
with particular regard to edges.
• Under no circumstances must the User interfere with or adjust sealed parts.
WARNING
Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers are provided
with the correct equipment for their needs, that it is installed, commissioned and serviced in accordance with the manufacturer’s
instructions by competent persons and that it meets the requirements of the appropriate Building Regulations. The Benchmark
Checklist can be used to demonstrate compliance with Building Regulations and should be provided to the customer for future
reference.
Installers are required to carry out installation, commissioning and servicing work in accordance with the Benchmark Code of
Practice which is available from the Heating and Hotwater Industry Council who manage and promote the Scheme.
Visit www.centralheating.co.uk for more information.

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3
Envirosorb 8
Envirosorb 10
Envirosorb 14
15410
30
psi
bar
2040
10
04
13
2
50
58

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4
Description Section Page
Your Safety 1 5
Maintenance 2 7
Design description 3 8
Display 4 9
Adjustments 5 12
Operating Instructions 6 14
Service Indicator Description 7 17
Maintenance 8 18
Disposal 9 20
Fault Code Description 10 21
Troubleshooting 11 22
Contents

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5
1.1 SAFETY WARNINGS
The appliance MUST be earthed.
The appliance MUST be connected to a separately fused sub-
circuit protected by a correctly sized circuit breaker and earth
leakage protection.
Connection of the whole electrical system of the appliance, including
any heating controls, to the electrical supply must be through one
common isolator.
In your own interests and that of safety, it is the Law that ALL
appliances have been installed by a competent person and used
in accordance with the Regulations and Standards for refrigeration,
electrical, hydraulic and mechanical equipment prevailing in relation
to the location of such installations.
This appliance has been designed and manufactured for heating
and circulating water in a central heating system. The use thereof
for other domestic or industrial purposes shall be the exclusive
responsibility of the persons designing, managing, installing or using
them in that way. As part of its policy for ongoing improvments
of its products, Glow-worm reserves the right to modify these
specications without prior notice. Glow-worm cannot foresee all
the possible circumstances that could pose a potential risk.
Prior to handling, installing, starting up, using or performing
maintenance on the appliance, the persons assigned to perform
these tasks should be familiar with all the instructions and
recommendations set forth in the appliances installation manual
and in the user manual.
1 Your safety
In the event that the heat pump is removed and subsequently
reinstalled, its proper reinstallation must be adequately veried.
Otherwise, water or refrigerant leakage could occur, as well as
short-circuiting or even re.
Do not handle the appliance with wet or damp hands as this would
cause a risk of electrocution.
The appliance must not be installed near a heat source, ammable
or corrosive materials or the air vent from an adjoining building.
Disconnect the power source when cleaning the appliance. This will
avoid the risk of short-circuiting or injury. Connect the earth cable to
the right connection point (not to the gas pipe, water pipe, neutral
cable or telephone line). Incorrect earthing may cause electrical
risk. Install the correct electrical protection and correct size and
rated cable to ensure electrical safety.
Do not place the equipment in areas open to insecticides or
pesticides. Poisonous chemicals may settle in the appliance
and harm the health of persons with allergies to chemical
substances.
No part of this manual can be reproduced without written
consent. This appliance contains R410a refrigerant which
is covered by the F-gas regulations. Periodic inspections
for refrigerant leaks may be required depending on current
European and local legislation.
For further information, please contact your nearest Glow-worm
distributor.
NOTE: Keep the manuals throughout the service life of the
appliance. The information relating to this unit is divided between
two manuals: installation manual and user manual.

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6
1.2 Testing and Certication
This appliance is certicated for performance and safety in use.
It is important that no alteration is made to the appliance unless
approved, in writing, by Glow-worm.
Any alteration not approved by Glow-worm, could invalidate
the certication, appliance warranty and may also infringe the
current issue of the statutory requirements.
1.3 CE Mark
The CE mark on this appliance shows compliance with:
1. Directive 97/23/EEC on pressure equipment
2. Directive 73/23/EEC on the harmonisation of the Laws of the
Member States relating to electrical equipment designed for use
within certain voltage limits.
3. Directive 89/336/EEC on the approximation of the Laws of
the Member States relating to electromagnetic compatibility.
1.4 General Note
Servicing/maintenance should be carried out by a competent
person in accordance with the rules in force in the countries of
destination.
1.5 Servicing
This appliance should be serviced regularly to optimise its
safety, efciency and performance.
To ensure the continued efcient and safe operation of the
appliance it is recommended that it is checked and serviced at
regular intervals. The frequency of servicing will depend upon
the site conditions and usage, but in general, once a year should
be enough.
To obtain service, please call your installer or Glow-worm’s own
service organisation using the telephone number on the inside
front cover of this booklet.
1.6 Spare Parts
REMEMBER: When replacing a part on this appliance, use
only spare parts that you can be assured conform to the
safety and performance specication that we require. Do not
use reconditioned or copy parts that have not been clearly
authorised by Glow-worm.
If replacement parts are required contact Glow-worm’s own
service organisation using the telephone number on the
inside front cover of this booklet.
Please quote the name and model of the appliance. The
name and model badge is on the outer case above the
hydraulic connections.
If in doubt seek advice from Glow-worm’s own service
organisation using the telephone number on the inside front
cover of this booklet.
1 Your safety

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2.1 CLEANING THE UNIT
IMPORTANT: Before cleaning, ensure that the Envirosorb is
switched off.
Wipe the outer part of the appliance with a dry cloth.
Occasionally remove dust leaves and other build up from the
external heat exchanger inlet surface.
Occasionally check the base of the Envirosorb to ensure to
the drain pan is clean and there is no build up of corrosion.
DANGER: of injury and physical damage.
• Do not dismantle the appliance outlet. Exposing the fan can
be very dangerous.
DANGER: Danger of electric shock.
• Do not clean the appliance with water.
• Do not use petrol, solvents or polishes when cleaning the
appliance.
2 Maintenance

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3 Design Description
Glow-worm thanks you for purchasing this appliance.
This appliance is designed to efciently transfer 'free' heat
absorbed from the external ambient, concentrate this heat
using a refrigeration cycle and transfer this heat to your
heating system
This appliance contains, amongst others, the following
characteristics:
• Fully sealed refrigeration system utilising non-ozone
depleting R410a refrigerant
In-built hydraulic module consisting of pump, heat
exchanger, expansion vessel, air vent and pressure gauge
• Low noise levels.
• Programmable control with large digital screen for full
control of your installation.
• Allows you to set temperatures and weekly programming in
the home or premises.
• The control also provides comprehensive user and fault
dispay as well as providing deatils of the status of your
appliance.
• The control also informs the user of specic maintenance
needs.

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4 Display
LIST OF PUSH-BUTTONS AND ICONS ON STANDARD CONTROL PANEL
°C
°F
ERR
AM
PM
AM
PM
ON
OFF
1 2 3 4 5 6 7
LOW
BAT
TIMER
ON OFF
10 6 7 8
A
B
C
5
4
3
2
1
11
9
12
On/
/Mode Off/ /Set
Display functionNumber
1
2
Ambient temperature or Water outlet
temperature display
Time of programming period
3 Timer status display
4 Time of programming period
5 Days of the week display
6 On/Off status display
Display functionNumber
7 Operating mode (heating/cooling)
8 Manual or programme operation
9 Temperature display units C "Off/Set"
B Selection of values
Interface buttonsRef.
A "On/Mode"
10 Low battery indicator
11 Service/maintenance warning
12 Equipment failure warning
15313

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4 Display
4.1 USING THE PUSH-BUTTONS
Name FunctionNumber
A
B
For switching the appliance on and to
navigate through different functions by
pressing several times
"On/Mode"
"Off/Set"
C
For lowering and raising the values of a
parameter respectively
▲ and ▼
For switching off the appliance or
validating input
4.2 WARNING SYMBOLS
Equipment shut down warning, ERR
°C
°F
ERR
AM
PM
AM
PM
6 7
12
Off/
/Set
The control can show a series of alpha numeric error codes in the
event of specic situations occurring. They result in the system shut
down.
The control will show the ERR indication and a code which indicates
the error type according to the fault code description table, refer to
section 9.
15315
15316

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4 Display
4.3 EQUIPMENT STATUS DISPLAY
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
If the equipment is switched off, "OFF" is shown: Press "On/
Mode" once and the equipment will switch on.
Note: There may be a short delay before the unit starts
If the equipment is switched on, "ON" is shown: Press "Off/
Set" once and the equipment will switch off.
4.4 OPERATION DISPLAY
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
Manual Mode - unit operates continuously or timer delay
on or off using the delay timer
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
Programmable Mode - unit operates only for the user
set timed periods
Press the On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key several times until the
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
symbol blinks. Select the desired function using
the▲and▼push-buttons.
Conrm using the
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key or go to the next function using
the On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key.
The unit can be programmed to set several operating time
slots so it is enabled and disabled automatically.
NOTE: To set programmer, see section 6.

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5 Adjustments
5.1 TIME SETTING (time display)
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
Press the On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key several times until the
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
or
symbol blinks.
First enter the minutes using the▲and▼ buttons. Next press
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
. Then enter the hours using the ▲and▼buttons.
Conrm using the
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key or go to the next function using
the On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key.
NOTE: The time has to be set before programming.
5.2 DAY SETTING (selecting current day of the
week)
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
Press the On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key several times until the
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
or symbol blinks.▲and▼ push-buttons to select the number
for the day of the week. (E.g. Monday is 1, Tuesday 2, etc).
Conrm using the
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key or go to the next function using
the On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key.
5.3 OPERATING MODE
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
If the equipment is switched off:
Press On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
(the unit will switch on).
Select the desired function using the ▲and▼ push-buttons.
Conrm using the key
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
or go to the next function using
the On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key.
If the equipment is switched on:
Press On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
the key various times until the icon ashes and
proceed as in the previous case.
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
"Heat" mode operation: The heat pump equipment will
heat the room.
Cooling mode (where available) the heat pump will provide
cooling water to cool the room.
• With the control set as a room thermostat: The equipment
will only start to operate if the temperature of the room is
lower (heating) or higher (cooling) than that selected.
• With the control not set as a room thermostat: The
equipment will start to operate if the inlet (return) temperature
is lower than the setpoint temperature.

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13
NOTE: It is possible to use a third party control to operate
your Envirosorb unit, in these circumstances please refer to
the instructions supplied with that control.
5.4 TEMPERATURE MEASUREMENT IN
DEGREES CENTIGRADE OR FAHRENHEIT
Press the On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key several times until the
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
symbol
blinks.
Then use the ▲and▼ buttons to select °C for degrees
centigrade or °F for degrees fahrenheit, as required.
Conrm using the
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key or go to the next function using
the On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key.
5.5 TEMPERATURE
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
Only available when control set as inside thermostat:
Shows the room temperature
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
.
Using the programming functions, this allows you to enter the
desired temperature setting according to the operating mode.
5 Adjustments
Press the On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
key various times until the icon ashes
and enter the setpoint temperature desired.
When the temperature icon ashes this means that the
setpoint temperature can be selected.
Otherwise, the icon remains constant and the screen shows
the value of the ambient temperature.
Control not set as room control:
The temperature shown represents the water inlet (return)
temperature.
NOTE: The desired ambient temperature can only be set
when the control is set as a room thermostat.
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF

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14
6 Operating instructions
6.1 ADVANCE MODE
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
This omits the existing weekly programming in the control,
however does not delete it.
Delay timer when the manual mode is selected, at the
desired time using the "Timer" parameter, a stop can
be set up if the equipment is running or a start-up if the
equipment is not running.
NOTE: THE DELAY TIMER operates once only
Delayed start if unit is off:
The mode is enabled by pressing the key several times until
the
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF icon blinks.
If the unit is to be connected at a given time, ON THE SAME
DAY, select "On" using the ▲and▼arrows.
Conrm by pressing On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
. Using the ▲and▼arrows,
select the time (HH:MM - AM/PM) for start-up.
Conrm by pressing
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
. Press
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
to switch the unit
off.
The equipment remains switched off whilst on delay standby
and will start automatically at the selected time. The unit then
continues to operate until manually switched off or set to
timer mode.
Unit off
Unit on
ON
HH:MM
Delayed stop if the unit is operating:
If the unit is to be disconnected at a given time (on the same
day), select "Off" using
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF using the
▲and▼and arrows.
Conrm by pressing
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
.
Select the time (HH:MM - AM/PM) for the stop.
Conrm by pressing
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
.
The equipment is left running.
The equipment remains switched on whilst on delay standby
to switch off automatically at the selected time. The unit then
remains off until manually switched on or set to timer mode.
Unit on
Unit off
OFF
HH:MM
15339 15338

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15
6 Operating instructions
6.2 PROGRAMMABLE MODE
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
For temperature control the control must be set as a room
thermostat.
The contol responds to the time and weekly programming as
set. To set up programming, follow the steps below:
1st step:
Press On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
until the day of the week that you want to
program blinks.
2nd step:
Select the days for which the same programming is going to
be carried out.
Example: 1st block: Working days M-T-W-T-F correspond to
the numbers 1-2-3-4-5
Use the▲and▼arrows to select block days 1, 2, 3, 4, 5.
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
3rd step:
Press On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
The start-up time ashes. The start-up time
must ALWAYS be earlier than the stop time.
Using the▲and▼arrows select the start-up time (for example
7:00 AM)
4th step:
Press On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
The stop time blinks.
Using the▲and▼arrows select the stop time (for example
13:00 PM)
Press On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
to conrm.
5th step:
Now select the desired temperature (for example 23.0°C)
using the▲and▼arrows. The operating mode will be set
later
Press On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
to conrm.
6th step
Generation of another programming section within the day
block.
Steps 1 to 5 are repeated.
The next programming period must come after the rst one.
For example: Start-up: 16:00 PM
Stop: 20:00 PM
Temperature: 25°C
NOTE: A different temperature can be selected in each time
section.

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16
7th step. End program:
To conclude the programming of the day block, a time period
which shows the same start and end time must be entered.
Press On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
to conrm.
8th step. New Block:
Generation of another block of days:
Having conrmed the end of the rst block of days, the next
block is started. These must be different days to the previous
setting.
Example:
Programming 1: Monday to Friday from 7:00 to 13:00 and
from 16:00 to 20:00
Programming 2: Saturday from 10:00 to 14:00 and from
17:00 to 22:00
Programming 3: Sunday from 10:00 to 14:00
NOTE: In the programmable mode, the operating mode will
be the enabled for
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
heat or where tted, cool. The unit
will only operate for ambient temperature values above the
setpoint values.
6 Operating instructions

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17
7 Service Indicator Description
15333
7.1 Equipment inspection warning
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
°C
°F
ERR
AM
PM
AM
PM
ON
OFF
1 2 3 4 5
6 7
LOW
BAT
TIMER
ON OFF
11
On/
/Mode Off/ /Set
When an "F" and a number is ashing, servicing is necessary.
Service indicators do not cause a shut down of the system.
When one of the "F" codes is ashing the symbol
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
is shown
on the control. Each time any key is pressed, the service indicator
will appear for a few seconds.
Code Description
F0 This ashes at around 2000 operational
hours of the pump to indicate that it is
necessary to clean the lter.
F3 In heating mode, at an outside
temperature of 7ºC, the pressure reached is
higher than 35 bars.
F4 In heating mode, at an outside
temperature of 20ºC, the refrigerant low
pressure is below 3 bar
F5 Water ow lacking: an initial fault has been
found. Repetition of the F5 fault will stop the
device (code h2)
F6 Antifreeze fault: an initial fault has been
found. Repetition of the F6 fault will stop the
device (code h4)
F9 The sensor measured an initial pressure
excess. 3 detections produce an h0 block-
age. An h0 code may be produced either by
3 high pressure detections in less than an
hour (P>42 bar), or by a triggering of the
pressure switch (P>42 bar).

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18
8.1 CHANGING THE BATTERIES (if wall
mounted)
When the control batteries run out, the symbol
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
will
appear on the screen and the steps below must be followed:
• Isolate the power supply if the control is still on the
appliance.
• Dismantle the control and replace the batteries. Use two
new alkaline AAA batteries.
• Do not mix new and used batteries.
• If the batteries are not replaced when indicated by the
screen, the control may enter a locked status.
• If, after replacing the batteries, the control remains with a
blank screen, press to activate it.
NOTE: reprogramming may be required after replacing
batteries.
WARNING: Potentially dangerous situation for the product
and the environment. The batteries may contain substances
harmful to the environment. Dispose of used batteries in a
suitable container for treatment.
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
8 Maintenance
15413
15430
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
°C
°F
ERR
AM
PM
AM
PM
ON
OFF
1 2 3 4 5 6 7
LOW
BAT
TIMER
ON OFF
On/
/Mode Off/ /Set
°C
°F
ERR
AM
PM
AM
PM
ON
OFF
1 2 3 4 5 6 7
LOW
BAT
TIMER
ON OFF
On/
/Mode Off/ /Set
BATTERY
COMPARTMENT

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19
8 Maintenance
NOTE:
• This procedure must only be carried out when the
Envirosorb control is installed inside your dwelling or
premises.
• When the control is installed on the appliance, the
procedure must be carried out by a competent person,
since there is a danger of electrocution.
8.2 GENERAL CARE
WARNING:
• If you are not planning to use the appliance for a while,
never disconnect the circuit breaker.
The appliance must always have a power supply. If the
power supply is disconnected, the pump anti-freeze and anti-
wear protection devices cannot work. The appliance may be
seriously damaged.
• Never shut off the water circuit valves. If the valves are shut
off, pump antifreeze and anti-wear protection devices cannot
work. The appliance may be seriously damaged.
• Occasionally check the appliance base. If the base is
damaged or deteriorated, the appliance could fall down and
cause physical or material damage.

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20
9 Disposal
WARNING:
Potentially dangerous situation for the appliance and the
environment. To avoid this, follow the instructions described
in this section.
Your product bears the recycling symbol
On/
/Mode
Off/
/Set
AM
PM
1 2 3 4 5 6 7
°C
°F
LOW
BAT
ON
OFF
TIMER
ON OFF
which
means that the following must be observed when you
dispose of it:
• Dispose of the equipment in accordance with the
relevant local and national standards, correctly and in an
enironmentally-friendly way.
• Do not put the appliance with other domestic, unclassied
waste.
• Hand the appliance in to a waste management company
that is authorised by the local authorities to transport it to a
proper treatment plant.
• If the appliance is being replaced with a new product
destined for the same use, hand in the old product to
the distributor of the new unit for waste management as
appropriate.