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Electrical Heater
10.4 Checks Before Contacting Service
10.4.1 Factory pre-installed Back-up Heater
10
82
Trouble shooting
Before you contact your dealer, check following points:
Symptom
Air-to-Water unit does not
run at all although power
is turned on.
If your Air-to-Water unit still does not work properly although you checked the points as de-
scribed above, first stop the operation and isolate the electrical supply. Then contact your dealer
and report the serial number and symptom.
Never repair your Air-to-Water unit by yourself, to do so may result in serious injury. The unit
must only be repaired by an authorised service agent.
You also report if the inspection mark
numbers appear on the LCD of the remote control unit.
Should the power fail while the unit is running. If the power supply for this unit is temporarily cut
off, the unit will automatically resume operation once power is restored using the same settings
before the power was interrupted.
Cause
Power failure or after power
failure Operation button is turned
off.
Fuse blown.
Improper temperature settings.
and the letters E, F, H, L, P in combination with the
Remedy
Press ON/OFF operation button on
remote controller again.
Switch on breaker if power is turned off.
If breaker has been tripped, consult your
dealer without turning it on.
If fuse is blown, consult your dealer.
DHW PAW-VP - Installation manual – 2020-05
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