Trouble Shooting; Guides, Tips And Cautions - Carrier 42QHP09E8S-1 Benutzerhandbuch

4. TROUBLE SHOOTING

Guides, Tips and Cautions

The following may occur during normal operation, and may not indicate malfunction.
Cooling or heating is delayed.
Fan speed changes – off, very slow and then normal
The heating operation stops suddenly and defrost-light
blinks.
Mist coming out of the indoor unit
Low volume sounds are emitted by the air conditioner
Dust discharges from the unit.
Emits a peculiar odour.
Changes to fan only while cooling or heating.
Poor heating performance
Turns on automatically
Operation is erratic, unpredictable or unresponsive.
The multi-system air conditioner can not be in different operating modes at the same time, such as one unit being
in the "COOL" mode and one unit being in the "HEAT" mode.
When conducting different operations, the "HEAT" mode will be given priority. The indoor unit which operates in
"COOL" or "FAN" mode will stop and display "P5".
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Case Explanation
A 3 ~ 5 minutes delay protects the compressor.
Automatically happens in heating mode - prevents cold
air blowing onto occupants.
Frost removal on outdoor unit is in progress (5 ~
10mins).
May occur when unit temperature is low and room air
is hot and humid.
"Hissing": normal – gas pressure equalizing when
compressor stops or starts.
"Squeaking": normal expansion and contraction of
plastic and metal parts.
Rushing air – normal when louver resets its position.
May occur when air conditioner is used for the first time
or has not been used for a long time.
Usually caused by chemicals, cigarette smoke, cooking
etc. If not the case call your suitable contractor.
Room temperature is the same as that selected with
the remote. If not the case call a suitable contractor.
May occur when outdoor temperatures are close to or
below zero degrees Celsius.
If not the case call a suitable contractor.
Normal when power is restored after a power failure.
Interference from cell phone towers and remote
boosters may cause the unit to malfunction.
Disconnect the power and then re-connect.
Press the ON/OFF button on the remote controller to
restart operation.
If the problem is not resolved call a suitable contractor.