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18.3.1.7 Communication error between the indoor PCB and display board(IDU Eb/EH 0b)
Power off, then restart the unit
2 minutes later
Replace the indoor main PCB
Yes
Replace the Display board
Check the wirings
and connection
Yes
No
Correct the connection
or replace the wirings
Yes
10.3.1.8 Inverter compressor drive malfunction(IDU P4/ PC04)
The trouble shooting is same with IPM module protection.
10.3.1.9 Communication malfunction between indoor two chips (IDU FA)
Shut off the power supply and
turn it on 2 minutes later.
Is it still displaying
the error code?
YES
Replace the indoor main
PCB.
The unit is operating normally.
NO
10.3.1.10 Refrigerant Leakage Detection(IDU EC/ EL 0C)
Summary of Contents for 42QHE09D8SH
Page 1: ...SUPER INVERTER SERIES MULTI TYPE Service Manual ...
Page 21: ...18 4 5 6 Easy operation 4 5 7 Remote control and optional wired control method ...
Page 25: ...22 5 4 Console 16 Drain pipe 195 Hanging arm 700 600 210 N A ...
Page 29: ...25 6 Service Space unit mm 6 1 Four way cassette compact 6 2 Four way cassette super slim ...
Page 31: ...27 6 5 Under Ceiling 6 6 Hi wall Cool Easy 18C AG ...
Page 32: ...Specifications 7 Electrical Wiring Diagrams 7 1 Indoor unit A6 Duct type 7K 9K ...
Page 33: ...Specifications 12K 18K 24K ...
Page 34: ...Specifications Page 67 Compact Cassette type 7K 9K ...
Page 35: ...Specifications Page 68 12K ...
Page 36: ...Specifications Page 69 18K ...
Page 37: ...Specifications Page 69 24K ...
Page 38: ...Specifications Page 70 Wall mounted type 18C 7K 9K 12K 18K ...
Page 39: ...Specifications Page 71 18C 24K ...
Page 42: ...Specifications Page 81 21K 27K 16022000035910 ...
Page 44: ...Specifications Page 78 36k ...
Page 45: ...Specifications Page 79 42k ...
Page 55: ...Specifications 14K 18K s n o i s n e m i D 3 1 ...
Page 56: ...Specifications 21K 27K ...
Page 57: ...Specifications 28K 36K 42K ...
Page 81: ...83 EC 50 Open or short circuit of outdoor unit temperature sensor T3 T4 T5 ...
Page 112: ......