Resol DeltaTherm PV User manual

*11211343* 11211343
Manual
en
Power-to-Heat controller
for the direct control of an
electric heater
Manual for the
specialised craftsman
Installation
Operation
Functions and options
Troubleshooting
DeltaTherm®PV
www.resol.com
Thank you for buying this RESOL product.
Please read this manual carefully to get the best performance from this unit. Please keep this manual safe.
The Internet portal for easy and secure access to
your system data – www.vbus.net
Beginning with firmware version 1.03

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© 20210217_11211343_DeltaTherm_PV.monen
Safety advice
Please pay attention to the following safety advice in order to avoid danger and
damage to people and property.
Danger of electric shock:
• When carrying out works, the device must first of all be disconnected from the
mains.
• It must be possible to disconnect the device from the mains at any time.
• Do not use the device if it is visibly damaged!
The device must not be used by children or persons with reduced physical, sensory
or mental abilities or without any experience and knowledge. Make sure that chil-
dren do not play with the device!
Only connect accessories authorised by the manufacturer to the device.
Make sure that the housing is properly closed before commissioning the device.
Set the code to the customer code before handing over the controller to the
customer.
Target group
These instructions are exclusively addressed to authorised skilled personnel.
Only qualified electricians are allowed to carry out electrical works.
Initial commissioning must be effected by authorised skilled personnel.
Authorised skilled personnel are persons who have theoretical knowledge and ex-
perience with the installation, commissioning, operation, maintenance, etc. of elec-
tric/electronic devices and hydraulic systems and who have knowledge of relevant
standards and directives.
Instructions
Attention must be paid to the valid local standards, regulations and directives!
Information about the products
Proper usage
The controller is designed for the direct control of an electric heater for using
excess current for heating a water store in compliance with the technical data
specified in this manual.
Any use beyond this is considered improper.
Proper usage also includes compliance with the specifications given in this manual.
Improper use excludes all liability claims.
EU Declaration of conformity
The product complies with the relevant directives and is therefore la-
belled with the CE mark.The Declaration of Conformity is available upon
request, please contact the manufacturer.
Note
Strong electromagnetic fields can impair the function of the device.
ÎMake sure the device as well as the system are not exposed to strong
electromagnetic fields.
Scope of delivery
The scope of delivery of this product is indicated on the packaging label.
Storage and transport
Store the product at an ambient temperature of 0 … 40 °C and in dry interior
rooms only.
Transport the product in its original packaging only.
Cleaning
Clean the product with a dry cloth. Do not use aggressive cleaning fluids.
Decommissioning
1. Disconnect the device from the power supply.
2. Dismount the device.
Subject to technical change. Errors excepted.

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Disposal
• Dispose of the packaging in an environmentally sound manner.
• At the end of its working life,the product must not be disposed of as urban waste.
Old appliances must be disposed of by an authorised body in an environmentally
sound manner. Upon request we will take back your old appliances bought from
us and guarantee an environmentally sound disposal of the devices.
Description of symbols
Warnings are indicated with a warning symbol!
Signal words describe the danger that may occur, when it is not avoided.
WARNING means that injury, possibly life-threatening injury, can occur.
ÎIt is indicated how to avoid the danger described.
ATTENTION means that damage to the appliance can occur.
ÎIt is indicated how to avoid the danger described.
Note
Notes are indicated with an information symbol.
ÎTexts marked with an arrow indicate one single instruction step to be carried
out.
1. Texts marked with numbers indicate several successive instruction steps to be
carried out.

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DeltaTherm®PV
The DeltaTherm®PV controller detects excess current, e.g. produced by PV
systems, calculates the energy available and redirects it to an electric heater.Thus,
excess current can be directly converted into thermal energy and stored.
Included with the DeltaTherm®PV
Controller with power unit (DeltaTherm®PV)
Sensor module and current sensors (DeltaTherm®E sensor)
DeltaTherm®PV
Contents
1 DeltaTherm®PV.............................................................................5
2 System overview...............................................................................6
3 Installation.........................................................................................7
3.1 Mounting ....................................................................................................................7
3.2 Electrical connection...............................................................................................9
3.3 MicroSD card slot of the controller..................................................................13
4 Operation and function of the controller.....................................14
4.1 Buttons .....................................................................................................................14
4.1.1 Operating control LED.........................................................................................14
4.1.2 Selecting menu points and adjusting values......................................................14
4.2 Commissioning .......................................................................................................17
4.3 Menu structure.......................................................................................................19
4.4 Main menu ...............................................................................................................19
4.5 Status ........................................................................................................................19
4.5.1 Controller................................................................................................................20
4.5.2 Measured / Balance values ...................................................................................20
4.5.3 Messages ..................................................................................................................21
4.6 Smart Remote.........................................................................................................21
4.7 Controller menu ....................................................................................................22
4.8 Variant menu ...........................................................................................................22
4.9 Optional functions .................................................................................................23
4.10 Basic settings...........................................................................................................25
4.11 MicroSD card ..........................................................................................................25
4.12 Manual mode...........................................................................................................26
4.13 User code ................................................................................................................27
5 Troubleshooting ..............................................................................27
6 Accessories......................................................................................30
7 Index.................................................................................................31
Bus


Single-phase electromechanical electric immersion heaters up to 3 kW with an
operating voltage of 230V~ and a thermal cut-out are suitable.
Electronically controlled electric immersion heaters are not suitable.

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1 DeltaTherm®PV
• Increase in self-consumption
• Stepless control of an electric immersion heater
• Household current priority
• Suitable for all grid-connected PV systems
• 0-10 V power control (optional)
• Internal backup heating with mains current (optional)
• Smart Remote access (optional)
• Inverter power limitation (optional)
Technical data controller with power unit (DeltaTherm®PV)
Inputs: 3 Pt1000 temperature sensors, 2 digital switching inputs, 0-10 V control
input
Outputs: 2 digital switching outputs, variable power control up to 3 kW (electric
immersion heater)
Power supply: 100 – 240 V~ (50 – 60 Hz)
Supply connection: type X attachment
Standby: 1.47 W
Rated impulse voltage: 2.5 kV
Data interface: VBus®
VBus®current supply: 35 mA
Functions: controller and power controller, backup heating internal, 0-10V power
control, Smart Remote, inverter power limitation
Housing: sheet metal, powder-coated
Mounting: wall mounting
Indication / Display: full graphic display
Operation: 3 buttons
Ingress protection: IP 20 / EN 60529
Protection class: I
Ambient temperature: 0 … 40 °C
Degree of pollution: 2
Fuse: F16A,T16A
Overvoltage category: 2
Maximum altitude: 2000 m above MSL
Dimensions: approx. 226 x 302 x 84 mm
Technical data sensor module (DeltaTherm®E sensor)
Inputs: 3 current inputs and 3 voltage inputs for SW16 current sensors
Power supply: 100 – 240 V~ (50 – 60 Hz)
Supply connection: type Y attachment
Standby: < 1 W
Rated impulse voltage: 1.0 kV
Data interface: VBus®
Functions: energy measuring unit
Housing: plastic, PC (UL 94 V-0)
Mounting: DIN rail in the domestic distribution board
Indication / Display: 2 operating control LEDs
Ingress protection: IP 20 / EN 60529
Protection class: II
Ambient temperature: 0 … 40 °C
Degree of pollution: 2
Dimensions: 71 x 90 x 58 mm
Technical data current sensor (SW16)
Nominal current: 70 A / 23.3 mA (current ratio 3000:1)
Nominal voltage output: 0.333 V~
Insulation voltage: 600 V~
Frequency range: 50 … 400 Hz
Ambient temperature: -15 … +60 °C

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2 System overview
The control unit consists of the controller with power unit and the sensor module.
The sensor module measures the current flow directly at the energy meter. If the
power generated is high enough, the excess current can be used for electrically
heating the water in the store. If the store maximum temperature is reached (S1),
loading will stop. Alternatively, power control can take place via an external 0-10
V signal.
Using a battery is possible in this system, but correct functioning cannot be guaran-
teed in all cases.The PV current is used with the following priorities:
1. Direct consumption
2. Charging the battery
3. Loading a hot water store
4. Grid feed-in
For this purpose, the sensor modules and the battery have to be arranged as shown
in the illustration.The current sensor of the battery must not detect the current
consumption of the controller and the loads controlled by the controller.
The SR off function (see page 21) allows remote access to the controller, e.g. in
order to switch it off when the battery is in use. If the switching input is closed, the
controller and all loads switch off regardless of the excess measured.
Different optional functions can be activated, see page 23.
• Internal backup heating
• Inverter
Sensors
S1 Temperature store 1 / GND
S2 optional 2 / GND
S3 optional 3 / GND
DIn1 Smart Remote 9 / 10
DIn2 Smart Remote 11 / 12
Output
Out1 Electric
immersion
heater
Out 1 / N / ⏚
DO1 Inverter
(optional)
21 / 22
Energy meter
Sensor module
Controller with power unit
Hot water store Load
InverterPV generator
Bus
S1
Battery

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InstallationDisplays, functions and optionsMessages Commissioning Operation and function
3 Installation
3.1 Mounting
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the device from power supply
before opening the housing!
Note
Strong electromagnetic fields can impair the function of the device.
ÎMake sure the device as well as the system are not exposed to strong
electromagnetic fields.
The devices must only be located in dry and dust-free interior rooms.
If the device is not equipped with a mains connection cable and a plug, the device
must additionally be supplied from a double pole switch with contact gap of at least
3 mm.
Please pay attention to separate routing of sensor cables and mains cables.
In order to mount the device to the wall, carry out the following steps:
1. Unscrew the screw from the cover and remove it along with the cover from
the housing.
2. Mark the upper fastening point on the wall. Drill and fasten the enclosed wall
plug and screw leaving the head protruding.
3. Hang the housing from the upper fastening point and mark the lower fastening
points (centres 105 mm).
4. Insert lower wall plugs.
5. Fasten the housing to the wall with the lower fastening screws and tighten.
6. Carry out the electrical wiring in accordance with the terminal allocation
(see page 9).
7. Put the cover on the housing.
8. Attach with the fastening screw.
Dimensions and minimum distances

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3
2
4
1
5
6
105mm
3
3
2
4
1
5
6
105mm
3

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InstallationDisplays, functions and optionsMessages Commissioning Operation and function
Step-by-step installation:
ATTENTION! Damage through overheating!
Commissioning the immersion heater in a system electrical-
ly connected, but not hydraulically filled can lead to damage
caused by overheating!
ÎMake sure the hydraulic system is filled and ready for
operation.
1. Make sure the store is filled and ready for operation.
2. Mount the sensor module on a DIN rail in the domestic distribution board
as close as possible to the energy meter. Make sure that no load is installed
between the sensor module and the energy meter.
3. Connect the current sensors and the conductors of the sensor module in
phase directly at the energy meter (see page 11).
4. Connect the sensor module with the DeltaTherm®PV by means of the bus
(SM) (see page 9 and page 12).
5. Establish the power supply of the controller (see page 12).
6. Run the commissioning menu (see page 17).
7. Carry out the desired adjustments in the controller menu (see page 22).
3.2 Electrical connection
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the device from power supply
before opening the housing!
ATTENTION! ESD damage!
Electrostatic discharge can lead to damage to electronic com-
ponents!
ÎTake care to discharge properly before touching the
inside of the device! To do so, touch a grounded sur-
face such as a radiator or tap!
Note
The connection to the power supply must always be the last step of the
installation!
Do not use the devices if they are visibly damaged!
The controller is supplied with power via a mains cable. The power supply of the
device must be 100– 240 V~ (50– 60 Hz).The cross section of the cable must be
2.5 mm².
Note
Use a shielded cable with a cross section of 3 x 2.5 mm² for connecting
the electric immersion heater, see page 12.
The cable length must not exceed 5 m.
⏚N L ⏚N L
Immersion heater Mains
Controller with power unit
Sensor module
Bus

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Sensor module
SM
CTL3
CTL2CTL1
L2
L3
L1
N
Versorgung /Power supply
160mA 240V~
Betrieb /Power
Störung /Error
A B
C
Bus cable to the DeltaTherm®PV (SM)
C
Data communication / Bus
The connection is to be carried out at the terminals marked SM (either polarity).
The connection to the controller is to be carried out at the terminals marked SM
(7 / 8).
The bus cable can be extended with a two-wire cable (bell wire).The cable carries
low voltage and must not run together in a cable conduit with cables carrying a
higher voltage than 50 V (please pay attention to the valid local regulations). The
cross section must be at least 0.5 mm2and the cable can be extended up to 50 m
in the case of a single connection.
A
Power supply:
Neutral conductor N
Conductor 1 L1
Conductor 2 L2
Conductor 3 L3
B
SW16 current sensors:
Current sensor CTL1
Current sensor CTL2
Current sensor CTL3

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InstallationDisplays, functions and optionsMessages Commissioning Operation and function
Three-phase connection
1. Connect the current sensors and the conductors of the sensor module in
phase directly at the energy meter.The arrow indicated on the current sensors
must point in the direction of the loads.
2. Make sure that no load is installed between the energy meter and the current
sensors.
The sensor module adds up the power values of all 3 phases. All 3 phases have to
be connected to the sensor module.
CTL3
CTL2CTL1
L2
L3
L1
N
L2
L1 N
L3
Versorgung /Power supply
160mA 240V~
LK
LK
LK
red
red
red
black
Energy meter
black
black
Note
The 3 phases have to be protected by means of a three-phase
16 A circuit-breaker (not included with the device).
Single-phase connection
1. Connect the current sensor and the conductor L1 of the sensor module di-
rectly at the energy meter. The arrow indicated on the current sensor must
point in the direction of the loads.
2. Make sure that no load is installed between the energy meter and the current
sensor.
3. Short circuit the connections of CTL2 as well as those of CTL3. The other
current sensors are not used.
CTL3
CTL2CTL1
L2
L3
L1
N
L2
L1 N
L3
Versorgung /Power supply
160mA 240V~
LK
red
Energy meter
black
Note
The phase has to be protected by means of a single-phase 16
A circuit-breaker (not included with the device).

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Bus terminals
The controller is equipped with the VBus®for data communication.The connec-
tion is to be carried out at the terminal marked VBus (either polarity).The sensor
module is to be connected to SM (terminals 7 / 8).
SM = sensor module 7 / 8
VBus = e.g. Datalogger 5 / 6
Digital switching inputs
Terminals
DIn1 Smart Remote 9 / 10
DIn2 Smart Remote 11 / 12
Digital switching outputs
Terminals
DO1 inverter 21 / 22
DO2 not assigned 23 / 24
Note
For more details about the commissioning procedure see page 17.
Controller with power unit
Note:
It must be possible to disconnect the device from the mains at any time.
ÎInstall the mains plug so that it is accessible at any time.
ÎIf this is not possible, install a switch that can be accessed.
Power supply of the controller (A)
Conductor L
Neutral conductor N
Protective earth conductor ⏚
Connection of the electric heater (B) (see figure on page 12)
Out 1
Out N
Protective earth conductor ⏚Protective earth conductor and shield
0-10 V switching input
Terminals
External power control 17 / 19
Temperature sensors
Terminals
S1 = temperature store
(above the electric immersion heater) 1 / 2
S2 = temperature sensor 2 (optional) 3 / 4
S3 = temperature sensor 3 (optional) 13 / 14
IP20
DeltaTherm
®
PV
Made in Germany
Power Supply
100 ... 240V~
50-60 Hz
F16A T16A
L N
Out 1 Out N
S3
NC
DO1
DO2
10V REF
GND
NC
10V IN
S1
S2
Din1
Din2
VBus
SM
B A
IP20
DeltaTherm
®
PV
Made in Germany
Power Supply
100 ... 240V~
50-60 Hz
F16A T16A
L N
Out 1 Out N
S3
NC
DO1
DO2
10V REF
GND
NC
10V IN
S1
S2
Din1
Din2
VBus
SM
12
10
8
6
4
2
11
9
7
5
3
1
24
22
20
18
16
14
23
21
19
17
15
13
Bus cable to the
DeltaTherm®E sensor

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InstallationDisplays, functions and optionsMessages Commissioning Operation and function
3.3 MicroSD card slot of the controller
The controller is equipped with a MicroSD card slot.
With a MicroSD card, the following functions can be carried out:
• Store measurement and balance values onto the MicroSD card.After the trans-
fer to a computer, the values can be opened and visualised, e.g. in a spreadsheet.
• Prepare adjustments and parameterisations on a computer and transfer them via
the MicroSD card.
• Store adjustments and parameterisations on the MicroSD card and, if necessary,
retrieve them from there.
• Download firmware updates from the Internet and install them on the controller
via MicroSD card.
MicroSD card slot
Note
For more information about using a MicroSD card, see page 25.
Connection of the electric heater
ÎUse a shielded cable with a cross section of 3 x 2.5 mm² and a maximum
length of 5 m for connecting the electric immersion heater.
ATTENTION! Damage to the appliance!
Using a cable longer than 5 m can lead to damage to the
device!
ÎMake sure the cable length does not exceed 5 m.
Note
ÎConnect the shield to the protective earth conductor of the
DeltaTherm®PV only.To do so, use the clip inside the housing.
Do not connect the shield to the immersion heater.
L
N

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4 Operation and function of the controller
4.1 Buttons
Operating control LED
Buttons
The controller is operated via the 3 buttons below the display:
Left button () - scrolling downwards/ reducing adjustment values
Centre button (OK) - confirming / selecting
Right button () - scrolling upwards, increasing adjustment values
4.1.1 Operating control LED
The controller is equipped with a bicolour operating control LED. indicating the
following states:
Colour Permanently shown Flashing
Green Everything OK Manual operation of the immersion heater
Red Bus defective / no
communication
with the sensor
module
Sensor line break, sensor short circuit
4.1.2 Selecting menu points and adjusting values
During normal operation of the controller, the display shows the status menu.
If no button is pressed for 1 min, the display illumination switches off.After 3 more
minutes, the controller switches to the status menu.
1. In order to scroll through a menu or to adjust a value, press buttons and .
2. To open a submenu or to confirm a value, press the centre button (OK).
3. To enter the previous menu, scroll upwards by pressing button or scroll
downwards by pressing button until back is indicated.
4. Press the centre button (OK).
If the symbol ⏩is shown behind a menu item, pressing the centre button (OK) will
open a new submenu.
Values and options can be changed in different ways:
Numeric values can be adjusted by means of a slide bar.The minimum value is indi-
cated to the left, the maximum value to the right.The large number above the slide
bar indicates the current adjustment. By pressing buttons and , the upper slide
bar can be moved to the left or to the right.
Only after the adjustment has been confirmed by pressing the centre button (OK)
will the number below the slide bar indicate the new value.The new value will be
saved if it is confirmed by pressing the centre button (OK) again.
If only one item of several can be selected, they will be indicated with radio buttons.
When one item has been selected, the radio button in front of it is filled.

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InstallationDisplays, functions and optionsMessages Commissioning Operation and function
Adjusting the timer
When the Timer option is activated, a timer is in-
dicated in which time frames for the function can be
adjusted.
In the Day selection channel, the days of the week
are available individually and as frequently selected
combinations.
If more than one day or combination is selected, they
will be merged into one combination for the following
steps.
The last menu item after the list of days is Continue.
If Continue is selected, the timer menu opens, in which
the time frames can be adjusted.
Adding a time frame:
In order to add a time frame, proceed as follows:
1. Select New time frame.
2. Adjust Start and Stop for the desired time frame.
The time frames can be adjusted in steps of 5 min.
3. In order to save the time frame, select Save and
confirm the security enquiry with Ye s .
4. In order to add another time frame, repeat the
previous steps.
6 time frames can be adjusted per day or combination.
5. Select back in order to get back to the day se-
lection.

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Copying a time frame:
In order to copy time frames already adjusted into an-
other day / another combination, proceed as follows:
1. Choose the day / the combination into which the
time frames are to be copied and select Copy
from.
A selection of days and / or combinations with time
frames will appear.
2. Select the day or combination from which the
time frames are to be copied.
All time frames adjusted for the selected day or com-
bination will be copied.
If the time frames copied are not changed, the day or
combination will be added to the combination from
which the time frames have been copied.
Changing a time frame:
In order to change a time frame, proceed as follows:
1. Select the time frame to be changed.
2. Make the desired change.
3. In order to save the time frame, select Save and
confirm the security enquiry with Ye s .
Removing a time frame:
In order to delete a time frame, proceed as follows:
1. Select the time frame that is to be deleted.
2. Select Delete and confirm the security enquiry
with Ye s .

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InstallationDisplays, functions and optionsMessages Commissioning Operation and function
Resetting the timer:
In order to reset time frames adjusted for a certain day
or combination, proceed as follows:
1. Select the desired day or combination.
2. Select Reset and confirm the security enquiry
with Ye s .
The selected day or combination will disappear from
the list, all its time frames will be deleted.
In order to reset the whole timer, proceed as follows:
ÎSelect Reset and confirm the security enquiry
with Ye s .
All adjustments made for the timer are deleted.
Adjustment mode
Operation
Changing a value
Confirming a value
Next parameter
4.2 Commissioning
When the hydraulic system is filled and ready for operation, connect the controller
to the mains.
The controller has to be connected to the sensor module by means of the bus (SM).
The controller runs an initialisation phase in which the operating control LED glows
red.
When the controller is commissioned or when it is reset, it will run a commis-
sioning menu after the initialisation phase.The commissioning menu leads the user
through the most important adjustment channels needed for operating the system.
Commissioning menu
The commissioning menu consists of the channels described in the following. In
order to make an adjustment, adjust the desired value with buttons and and
confirm with the centre button (OK).The next channel will appear in the display.

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1. Language:
ÎAdjust the desired menu language.
2. Daylight savings time adjustment:
ÎActivate or deactivate the automatic daylight sav-
ings time adjustment.
3. Date:
ÎAdjust the date. First of all adjust the year, then the
month and then the day.
4. Time:
ÎAdjust the clock time. First of all adjust the hours,
then the minutes.
5. Maximum temperature:
ÎAdjust the desired maximum temperature.
6. Nominal power:
ÎAdjust the nominal power of the electric immer-
sion heater.
7. Variant:
ÎSelect the power control variant.
The following settings are available:
• Sensor module
• 10V IN (external 0-10 V power control)
8. Completing the commissioning menu:
Lastly a security enquiry will appear. If the security en-
quiry is confirmed, the adjustments will be saved.
1. In order to confirm the security enquiry, press the
centre button (OK).
2. In order to reenter the commissioning menu chan-
nels, press button .After you have confirmed the
security enquiry, the controller is ready for oper-
ation and normally the factory settings will give
close to optimum operation.
Note
The adjustments carried out during commissioning can be changed any-
time in the corresponding adjustment channel.
Set the code to the customer code before handing over the con-
troller to the customer (see page 27).

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InstallationDisplays, functions and optionsMessages Commissioning Operation and function
4.3 Menu structure
Main menu
Status
Controller
Variant
Optional functions
Basic settings
SD card
Manual mode
User code
Optional functions
Internal backup heating
Inverter
Status
Controller
Meas. / Balance values
Messages
Controller
Maximum temperature
Hysteresis
Nominal power
Reserve
Basic settings
Language
Auto DST
Date
Time
Reset
SD card
Remove card...
Save adjustments
Load adjustments
Logging interval
Logging type
Manual mode
Electric immersion heater
Fan
The menu items and adjustment values selectable are variable depending on adjust-
ments already made.
4.4 Main menu
In this menu, different menu areas can be selected.
The following menus are available:
• Status
• Controller
• Variant
• Optional functions
• Basic settings
• SD card
• Manual mode
• User code
1. Select the menu area by pressing buttons and .
2. Press the centre button (OK) in order to enter the selected menu area.
If no button is pressed for 1 min, the display illumination switches off.After 3 more
minutes, the controller switches to the status menu.
4.5 Status
In the status menu of the controller, controller status messages as well as measure-
ment / balance values and messages can be found.

20
en Installation Displays, functions and options MessagesCommissioningOperation and function
4.5.1 Controller
In the Status / Controller menu, all current controller values (power values, tem-
peratures, etc.) are indicated.
The power supplied to the electric immersion heater by the power unit is displayed
as Heating.
The Excess is the remaining power which is fed into the grid. Negative values mean
that mains current is used.
Display Description
Status Function status (see below)
Booster Function status booster (internal backup heating)
DCIn Input voltage (10V IN variant)
Heating Heating power
Excess Excess power
Inv. limit Power limitation inverter active / inactive
Store Temperature store (S1)
Sensor 2 Temperature sensor 2 (S2)
Sensor 3 Temperature sensor 3 (S3)
RPM Fan speed
In the following table, the possible function statuses are listed and explained.
Display Description
Ready Heating not in operation, excess too low
Heating Heating in operation (excess)
Backup heating Heating in operation (backup heating)
Max. temp. Maximum temperature exceeded (immersion heater)
Error Sensor defective (immersion heater)
SR off Remote access off
SR Plus Remote access backup heating
SR on Remote access on
4.5.2 Measured / Balance values
In the Status / Meas./ Balance values menu, all current measurement values as
well as a range of balance values are displayed.
Display Description
S1 … S5 Temperature S1… S5 (S4, S5: temperature in the controller)
DIn1, DIn2 Digital switching inputs (Smart Remote)
DO1, DO2 Digital switching outputs (inverter)
Immers. heater Operating status of the power stage of the electric heating
Heating h Operating hours of the electric heater
Heating Wh Heating energy in Wh
Backup heating h Operating hours of the internal backup heating
Backup heating Wh Backup heating energy in Wh
Excess Wh Excess energy in Wh
When a line with a measurement value is selected, another submenu will open.
If, for example, S1 is selected, a submenu indicating the minimum and maximum
values will open.