Mitsubishi HMA100V Technical Manual page 173

Cont'd from
previous page
Are the service valves fully open?
YES
Are the connections to the low
pressure sensor and sensor for
suction gas temperature OK?
YES
Are the characteristics of the low
pressure sensor and sensor for
suction gas temperature OK?
YES
Is the low pressure normal during
operation?
YES
Defective control PCB - replace.
Open the service valves.
NO
NO
Connect it.
Defective low pressure sensor
NO or sensor for suction gas
temperature - replace.
Top up refrigerant.
NO
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'10 • HM-T-149
Service
Troubleshooting guide