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Bosch Greensource Hydrolight - Hydrocomfort Manual

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ERROR MANAGEMENT
6 720 806 630 (2013/02)14
There are two sensors, T8 and T71, in the Hydrolight/Hydrocomfort
unit, which for safety reasons stop the heat pump if the temperature of
the flow rises above the set value.
PROBABLE CAUSE 1; INSUFFICIENT FLOW OVER THE HEAT PUMP:
▶Select Acknowledge.
▶ Check that all the valves are open. The thermostat valves in heating
systems should be fully open and in floor heating systems at least half
of the coils should be fully open.
▶ Contact the installer in the event of repeated alarms.
POSSIBLE CAUSE 2; BLOCKED PARTICLE FILTER:
▶Select Acknowledge.
▶ Contact the installer in the event of repeated alarms.
13.5.4 ERROR IN MAIN BOARD, HEATING SYSTEM
An error has occurred in the communication between the Hydrolight/
Hydrocomfort module and the heat pump.
▶ Contact the installer in the event of repeated alarms.
13.5.5 ERROR IN ACCESSORY BOARD
Fault in the accessories board (IOB-B) in the Hydrolight/Hydrocomfort
module or corresponding communication.
▶Select Acknowledge.
▶ Contact the installer in the event of repeated alarms.
13.5.6 ERROR IN ROOM SENSOR BOARD (ROOM CONTROLLER)
OR ERROR IN E12.T5 ROOM SENSOR BOARD
Fault in the CAN-BUS connected room controller or communication to it.
▶Select Acknowledge.
▶ Contact the installer in the event of repeated alarms.
13.5.7 ERROR IN MULTI FUNCTION BOARD
Fault in the multifunction board or corresponding communication.
▶Select Acknowledge.
▶ Contact the installer in the event of repeated alarms.
13.5.8 FAULT ON ADDITIONAL HEATER
Alarm from additional electric heater.
▶ Check status in the booster heating.
▶Select Acknowledge.
▶ Contact the installer in the event of repeated alarms.
13.5.9 FREEZE PROTECTION EXCHANGER T9 ACTIVATED
An error has occurred with the frost protection for the exchanger.
▶Select Acknowledge.
▶ Contact the installer in the event of repeated alarms.
13.5.10 ALARM HEAT PUMP
The heat pump has developed a fault.
▶Select Acknowledge.
▶ Contact the installer in the event of repeated alarms.
13.5.11 LOW MAINS VOLTAGE
If the mains voltage falls below 170 V, the information symbol in the
display lights up. If the voltage falls below 170 V for more than one hour,
the alarm is activated.
▶ Contact the installer.
13.5.12 OR SAFETY THERMOSTAT VS2 TRIPPED
▶Acknowledge Thermostat with alarm
▶ Contact the installer in the event of repeated alarms.
13.5.13 SCREED DRYING SET POINT VALUE FOR HEATING NOT
REACHED
The alarm is activated if the temperature at the current stage in the
drying program is not reached within the set time.
13.5.14 OVERLOADED TRANSFORMER
▶Select Acknowledge.
▶ Contact the installer in the event of repeated alarms.
13.5.15 FAULT ON ELECTRIC ELEMENT
Fig. 32
Possible cause 1: overheating protection of the power supply has
tripped.
▶ Check that the heat carrier pump has not stopped.
▶ Reset overheating protection of power supply. A reset button is
located in the switch box of the Hydrolight/Hydrocomfort module.
▶Select Acknowledge.
▶ Contact the installer in the event of repeated alarms.
13.5.16 NO PRESSURE IN SYSTEM
If the system pressure is less than 0.5 bar (Hydrocomfort only), this trips
the pressure switch which switches off the power supply and triggers
the alarm No pressure in system. To remedy the fault:
▶ Check that the expansion tank and safety valve are suited for the
correct pressure in the system.
▶ Slowly increase the pressure in the heat system by adding water via
the filling valve.
▶ Acknowledge the alarm manually by pressing the rotary selector in the
user interface of the Hydrocomfort unit (, fig. 2).
13.6 WARNING MESSAGE
13.6.1 IS THE HEAT PUMP FUSED FOR THIS OUTPUT?
The warning is activated to ensure that the system is designed to handle
the load produced.
In the info log is stored Check fuse.
▶ Check that the heat pump and the Hydrolight/Hydrocomfort unit is
connected to the correct fuse size.
13.6.2 MAXIMUM WORKING TEMPERATURE HEAT PUMP
In the info log is stored Maximum working temperature heat pump.
Fig. 33
The temperature sensor T9 located in the Hydrolight/Hydrocomfort unit
stops the heat pump for safety reasons as soon as the temperature of the
return water exceeds a certain limit (>56 °C).
Probable cause 1; The heat setting is set so high that the heating
system’s return temperature is too high:
▶ Reduce the heat setting.
Possible cause 2: valves on the underfloor heating system or
radiators are closed.
6 720 648 148-56.1I
6 720 641 467-29.1I
… 14 …


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