42 WHC/WHE
GB - 16
Troubleshooting guide for the owner, accessories
Troubleshooting
Air conditioner will not start:
• Main supply switch is OFF; switch to ON.
• Fuses on main switch are burnt out; replace fuses.
• Selected temperature is higher than the room temperature (or
lower in the heating mode).
Air conditioner is not supplying sufficient capacity:
• Free air circulation is obstructed on the unit.
• Dirty filters reduce air quantity circulating.
• Doors and/or windows are open.
• Fan speed has been set to 'low'.
• The indoor unit air flow grill is not directed for optimal ventilation.
• Selected temperature is not correct.
• The water flow rate is insufficient
• Air present in the hydraulic circuit
• Thermo-electric valve does not open.
Mist comes out of the unit:
• A slight mist, coming out of the unit air outlet, can sometimes be
noticed during cooling operation. This is due to the cool air coming
into contact with the room air.
A slight whistling noise is heard when the air conditioner
starts or stops:
• This is water circulating.
Table VII: Accessories
Description Part number 42WHC 42WHE
016 020 028 016 020 028
Activated carbon filter
42HWX 900---102-40
Passive electrostatic filter
42HWX 900---103-40
Change-over thermostat kit
42WH9007
High water temperature protection kit
42WH9008
Condensate drain pump
42WH9009
Unpleasant smells coming from the unit:
• Unpleasant odours may originate from substances accumulated
on the unit air filter.
Stop unit and clean filters after switching mains supply off.
Restart unit in the ventilation (fan only) mode and open windows
to change room air.
Strange noises are coming from the unit:
• The unit may sometimes emit strange noises, when switched on,
during operation and switching off.
These are generally due to the effect of temperature changes on
the plastic parts.
Restart air conditioner after having corrected the faults.
WARNING: (models with electric heaters):
• If the manual reset thermostat trips, contact the authorized Zone
Assistance Centre.
Guide for the owner
Once installation is complete, use this manual to train the user
how to correctly run the air conditioner and about selecting
functions, such as:
• Turning the unit on and off.
• Control functions.
Give this manual to the user for consultation.
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