28 
 
TROUBLE CHART (Cont.) 
 
TROUBLE REASON  ACTION 
Strange noises coming from the 
indoor unit. 
Occasionally the indoor unit can emit 
some strange short noises during 
operation or when it has stopped. 
These are generally due to the of 
temperature changes on the plastic parts. 
Normal operation 
Starting in heating mode for heat 
pump systems 
If the system starts at low ambient 
temperatures, it takes a little while to 
reach a comfortable room temperature. 
When the system is started by the remote 
control, it emits a signal beep, but the 
louvre does not swing and the fan does 
not run until the operating temperature 
has been reached. 
Normal operation