Lennox Comfair HD, Руководство по установке, эксплуатации и техническому обслуживанию

Страница: 16 / 18

RESEARCH OF THE BREAKDOWNS
In the event of malfunction (burning smell or such), stop operation immediately, disconnect from the power supply and contact
the authorised after-sales service. Just switching off the unit does not fully cut off the power supply. Always make sure that the
on/off switch is put to off to ensure that the unit is fully disconnected from the power supply.
WARNING!
Before requesting service, carry out the following checks:
IT IS NORMAL...
- During operation and immediately after the system is switched off there could be the noise of water running inside the
unit pipes.
- During operation there could be creaking caused by the expansion of the front cover due to the change in temperature.
- The indoor unit could emit odours that come from the furniture, tobacco and other things present in the room.
- During cooling and dehumidifying operations, slight mist could be emitted by the unit. This is caused by the sudden
cooling, which produces condensation and mist.
- The fan could turn slowly in the dehumidifying mode or when the unit is checking the room temperature.
- The fan turns very slowly in the automatic operation control.
IF THE UNIT DOESN'T WORK...
- Has the power supply been cut off?
- Has there been a drop in voltage?
- Has a fuse blown or the switch tripped?
- Is the on/off switch in the off position?
- Is the timer working?
IF THE UNIT DOES NOT COOL ENOUGHT ...
- Is the air filter dirty?
- Are the air inlet grilles or outlets obstructed?
- Is the room temperature setting correct?
- Is a window or door open?
- In the case of cooling operation, is sunlight entering any room? (draw the curtains)
- In the case of cooling operation, are there any heating appliances, a computer or many people in the room?
INSTALLATION
- OPERATING &
MAINTENANCE
MANU A L
Page 14