Service manual

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GB
Turbo function
Turbo is use in cooling /heating/ventilation mode, the indoor blo�er fan is running at
super speed.
(1) enter condition: press turbo key of remote.
(2)end condition:
running time more than or equal to 15 minutes.
press turbo key of remote again.
(3) all restrict and protect condition are active in turbo running.
(4) return to prior state after end turbo running.
Protection
1. Prevent frost of indoor coil pipe (cooling and dehumidify mode)
When the temp. of middle coil pipe is less than or equal to 32 OF, indoor blo�er fan
is running at high speed, if the temp. less than or equal to 30 OF for 5 minutes, it turn
off compressor, �hen the temp. more than or equal to 45 OF, it exit protection.
2. Overheat of indoor coil pipe(heating mode)
When the temp. of middle coil pipe more than or equal to 135
O
F, indoor blo�er fan
is running at high speed, if the temp. more than or equal to 149
O
F , it turn off outdoor
unit, �hen the temp. less than or equal to 129
O
F, it exit protection.
3. Indoor fan motor fault(only PG motor)
If no feedback signal continuous 30 seconds during PG motor running, it turn off air
conditioner and display fan motor error.
4. Communicate fault
If it can’t receive correct signals after air conditioner has run for 60 seconds, it turn off
air conditioner and display communicate error.
5.Indoor sensor fault
When indoor sensor cut off or short, it shutdo�n air conditioner and display sensor
error.
6. When outdoor unit is fault, indoor unit only display fault.
Other function
Emergency key
Press emergency key after po�er on, air conditioner select auto mode, auto fan speed, natural
�ind, it set temp. is 77
O
F. If press emergency key again, air conditioner is shutdo�n.
Sound indication
1. The buzzer �ill sound �hen air conditioner turn on , turn off, po�er on or receive
remote signal.
Display
After turn on air conditioner, mode clash display d1 and timer lamp flash (light one
second, extinguish one second), defrost display dF , the running lamp flash (light one second,
extinguish one second)indicate anti cold �ind ,�hen air conditioner is normal running , the
running lamp is light.
Set timer or sleep , the yello� lamp is light.
Outdoor unit and indoor unit fault display
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