1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
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1<br />
12<br />
3<br />
4<br />
5<br />
Possible causes of troubles<br />
• Thermistor failure<br />
• Fault with<br />
compressor<br />
and its circuit<br />
O: flashes<br />
�: OFF<br />
Indoor thermistor is either<br />
open or short.<br />
Outdoor thermistor is either<br />
open or short.<br />
Protective device for<br />
compressor is activated.<br />
Indoor coil temp. (E1 = TH2) cannot be detected.<br />
Indoor coil temp. (E2 = TH3) cannot be detected.<br />
Indoor room temperature cannot be detected.<br />
Discharge gas temp.A (PC compressor=TH0A) cannot be detected.<br />
Outdoor coil liquid temp. (C1 = TH0E) cannot be detected.<br />
Outdoor coil gas temp. (C2 = TH0C) cannot be detected.<br />
PC compressor motor is overloaded.<br />
PC compressor motor is locked.<br />
Compressor current detection circuit is defective.<br />
Low-pressure protector is activated.<br />
(Low pressure switch or low pressure prevention.)<br />
Standard comp. contactor (Mg SW)is chattering.<br />
IV - 8<br />
4. Service procedures<br />
Wired remote<br />
controller<br />
display<br />
F01<br />
F02<br />
F10<br />
F04<br />
F06<br />
F07<br />
H01<br />
H02<br />
H03<br />
H06<br />
H18<br />
Wireless remote<br />
controller<br />
display<br />
Operation lamp<br />
and heat stand-by<br />
lamp flash<br />
alternately.<br />
O: Operation<br />
lamp<br />
O: Timer lamp<br />
�:Heat standby<br />
lamp<br />
�:Operation<br />
lamp<br />
O: Timer lamp<br />
�:Heat standby<br />
lamp
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