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Beschikbare talen
Beschikbare talen
Overview
Displayed Code
HP performance
W.301
HP performance
W.302
W.303
W.304
Heat pump drift
W.305
3.2. Other failures without error code display.
Default
Water not hot enough.
No heating
No hot water
Hot water volume not sufficient
Low pressure on the tab.
Installation
Reason
HP stopped.
Heating with
is low
electric backup.
HP stopped.
Heating with
is low
electric backup.
Dysfunction of
HP stopped.
the expasion
Heating with
valve
electric backup.
HP stopped.
Heating with
electric backup.
HP stopped.
Temperature
Heating with
sensor drift
electric backup.
Possible reason
Power supply is not permanent.
Set temperature too low.
Mode ECO selected & air
temperature out of range.
Electric backup or supply cables
(partially) defect.
No power supply to the water
heater : fuse, cabling...
Water heater layout too small
Operation in ECO mode
Filter of security group clogged.
Tank full of scale.
Operation
Result
Check the operation of the ventilator.
Check the refrigerant R134a charge.
Check that the air circulates without any obstacles.
Check the operation of the ventilator.
Check the refrigerant R134a charge.
Check that the air circulates without any obstacles.
Check the refrigerant R134a charge.
If complete, replace the expansion valve.
Check the refrigerant R134a charge.
Check the connections (A2) and the position of the
air intake probe and the evaporator probe. If
necessary replace the probe cable harness.
Maintenance
Service action
Diagnosis and service
Check that the device receives
permanently electric current.
Check that no cold water flows into
the hot water circuit (mixing tap
defect).
Select a higher set temperature.
Select the mode AUTO. Check the
periods of programming.
Check the resistance of the heating
element on the plug, and the good
shape of the cables.
Check the security thermostat.
Check the voltage on the power
supply cable
Check the programmed periods
and reception of Night / Low Tariff
signal.
Select AUTO mode
Clean the filter.
Remove the scale from the tank.
Warranty
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