Mitsubishi FDT125VNPWVH - Microcomputer Circuit Diagnosis Procedures

'22 • PAC-SM-412
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35
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(d) Detail of opepation
(i)Changeoperationmodetocooling.
(ii)Thecompressorspeedisxedat40rps.
(iii)TheopeningoftheEEVisxedat470pulses.
1)Whenoutdoorairtemperature(TH2)anddischargepipetemperature(TH3)areinthecontrolrange(A)
①
Refrigerantejectioncontrol(2minutes)
②
Compressor stop (1 minute)
③
Normalheatingoperation
2)Whenoutdoorairtemperature(TH2)anddischargepipetemperature(TH3)areinthecontrolrange(B)
①
Refrigerantejectioncontrol(2minutes)
②
Compressor stop (1 minute)
③
Refrigerantejectioncontrol(2minutes)
④
Compressor stop (1 minute)
⑤
Refrigerantejectioncontrol(2minutes)
⑥
Afterstoppingthecompressorfor3minutes,startheatingoperation.
(-15,0)
TH2[°C]
TH3[°C]
Control range(A)
Control range(B)