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Worcester Greensource Manual

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ERROR MANAGEMENT
6 720 642 344 (2010/01) 23
BClean filter if required (Æchapter 7.4).
POSSIBLE CAUSE 3: PRIMARY HEATING CIRCUIT
PUMP FAULT.
BCheck whether the primary heating circuit pump has
stopped.
BNotify customer service if the fault continues to occur.
POSSIBLE CAUSE 4: INADEQUATE/NO FLOW RATE
ACROSS THE HEAT PUMP.
BSelect Acknowledge.
BCheck whether the primary heating circuit pump has
stopped.
BCheck 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.
BNotify customer service if the fault continues to occur.
POSSIBLE CAUSE 5: INADEQUATE AMOUNT OF
WATER IN THE DOMESTIC HEATING SYSTEM.
BContact the dealer.
8.5.10 TRIPPED MOTOR CUT-OUT
Fig. 58
POSSIBLE CAUSE 1: OCCASIONAL FAULT OR
ELECTRICITY NETWORK OVERLOADED.
BSelect Acknowledge.
BWait until the heat pump starts again.
BNotify customer service if the fault continues to occur.
Possible cause 2: Power supply to the heat pump
failed.
BContact the dealer.
8.6 WARNING WINDOW
8.6.1 HIGH TEMPERATURE DIFFERENCE HEAT
TRANSFER FLUID
Fig. 59
This warning window is displayed when the temperature
difference between sensors T8 and T9 becomes too
high.
PROBABLE CAUSE 1; INSUFFICIENT FLOW OVER THE
HEAT PUMP:
BCheck whether the primary heating circuit pump has
stopped.
BCheck whether all valves are open. In a heating
system incorporating thermostatically controlled
valves, these valves must be fully open. In underfloor
heating systems, at least 50% of all heating loops
must be open.
POSSIBLE CAUSE 2; BLOCKED PARTICLE FILTER:
BClean filter (Æ chapter 7.4).
8.7 INFORMATION FROM THE HEAT
PUMP
8.7.1 HEAT PUMP IS NOW WORKING AT ITS
HIGHEST PERMITTED TEMPERATURE
Fig. 60
Temperature sensor T9 is fitted inside the heat pump.
This stops the compressor for safety reasons as soon as
the return temperature is too high. The limit is approx.
59 °C.
PROBABLE CAUSE 1; THE HEAT SETTING IS SET SO
HIGH THAT THE HEATING SYSTEM’S RETURN
TEMPERATURE IS TOO HIGH:
BReduce the temperature setting.
PROBABLE CAUSE 2; THE HOT WATER TEMPERATURE
IS SET TOO HIGH:
BContact the dealer.
6 720 641 467-26.1I
6 720 641 467-28.1I
6 720 641 467-29.1I
… 23 …


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