Midea VRF Series User Manual

V6R VRF 50/60Hz
137
Part
6
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Diagnosis and Troubleshooting
2.25 PL, C7: Inverter module temperature protection
Digital display output
Description
 All units stop running.
 Error code is displayed on the unit with the error.
Trigger / recover condition
 Trigger condition:
For PL protection: Refer to Part 3 6.5 Inverter Module Temperature Protection Control
For C7 protection: PL protection appears three times in 100 minutes.
 Recover condition:
Refer to Part 3 6.5 Inverter Module Temperature Protection Control
 Reset method:
For PL protection: Resume automatically.
For C7 protection: Manually restart.
Possible causes
 Blocked, dirty or loose heat sink.
 Inverter module damaged.
Procedure
PL / C7
The inverter module heat sink is blocked
or dirty
Yes
Clean or replace the heat sink
No
The screws connecting the heat sink to
the inverter module are loose
Yes
Tighten the screws and make sure the
heat sink is well-connected
No
Replace the inverter module

Midea VRF Series Specifications

General

Compressor Type	Inverter Scroll Compressor
Type	Variable Refrigerant Flow (VRF)
Refrigerant	R410A
Control	Centralized control, individual control
Indoor Unit Types	Wall mounted, cassette, ducted, floor standing
Energy Efficiency	High energy efficiency with DC inverter technology
Indoor Unit Noise Level	19 dB(A) to 45 dB(A)