0C7 0Pl: High Module Temperature Protection - Carrier 38VMA Series Service Manual

y. 0C7 0PL: High Module Temperature Protection
5. Error display:
ODU display: 0PL/0C7
2. Applicable models:
38VMA***HDS5-1 (208/230V-3Ph-60Hz)
38VMA***HDS6-1 (460V-3Ph-60Hz)
3. Error definition:
Error is reported when the temperature of the module is registered on the main board Tf > 172.4°F, and 0C7 is reported when
0PL occur 3 times within 100 minutes.
4. Possible causes:
• Clogged fin of radiator resulting in poor heat transfer
• Left/right fan connected in reverse order during maintenance
• Damaged ambient temperature sensor for the module
• Damaged main board
CN64: the control port of fan A (left fan)
CN65: the control port of fan B (right fan)
Fan module A: corresponding
to the left fan
Fan module B: corresponding
to the right fan
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