Midea MCH2U-18PHH2

91
8.4.
2.14 The cooling operation or heating operation does not operate.
Potential causes
● Faulty 4-way valve
Check of 4-way, please refer to part 5 in
9.5 Trouble Criterion Of Main Parts.
8.4.2.15 When cooling, heat exchanger of non-operating indoor unit frosts.
When heating, non-operating indoor unit get warm.
Potential causes
● Faulty EXV
● Wire and tubing connected in reverse.
Check of EXV, please refer to part 6 in
9.5 Trouble Criterion Of Main Parts.
8.5 Trouble Criterion Of Main Parts.
Spec.
Indoor unit
Model 9k Oasis 12k Oasis 18k Oasis 24k Oasis
Indoor fan motor
WZDK20-38G WZDK20-38G WZDK58-38G WZDK60-38G
Model
MEHSU-09CHD2
MEHSU-12CHD2
MEHSU-18CHD2
MEHSU-24CHD2
Indoor fan motor
WZDK55-38GS-W
WZDK55-38GS-W
WZDK90-38GS-W
WZDK90-38GS-W
Model
MEHSU-09CHC2 MEHSU-12CHC2 MEHSU-18CHC2 MEHSU-24CHC2
Indoor fan motor
WZDK46-38G WZDK46-38G WZDK46-38G ZKFP-42-8-1
Model
MEHSU-09CHN2
MEHSU-12CHN2
MEHSU-18CHF2 MEHSU-24CHF2
Indoor fan motor
RD-280-20-8A RD-280-20-8A ZKFN-55-8-1 ZKFN-55-8-1
Outdoor unit
Model MCH2U-18PHH2
MCH3U-27PHH2
MCH4U-36PHH2
MCH5U-48PHH2
Compressor
ATM150D23UFZ
ATF235D22UMT
ATF310D43UMT
ATQ360D1UMU
Outdoor fan motor
ZKFN-50-8-2 ZKFN-120-8-2 ZKFN-120-8-2 ZKFN-85-8-22