Troubleshooting
Diagnostic Procedure for Check Code
80
14
Check code
Operation cause
1. Outdoor unit service valve closed
2. Cooling bypass PMV error
[AE]
3. TD1 sensor error
TD1 condition gas leak detection
4. Insufficient refrigerant, blockage in pipe
5. Blockage of indoor filter
6. Blockage of PMV assembly on the liquid line
Are the gas pipe and liquid
pipe service valves of the
outdoor unit fully open
?
Is there a blockage
in the PMV assembly on
the liquid line
?
Open valves fully.
Replace TD1 sensor.
Replace both the PMVs.
No
Yes
Yes
No
Are the resistance characteristics
of TD1 sensor normal
?
No
Yes
Insufficient refrigerant,
blockage, pipe breakage.
(Check miswiring of the outdoor unit according to miswiring check function.)
Check code
Operation cause
[AF]
Abnormal power phase order or missing phase of
Phase order alarm
power supply to the outdoor unit
There is an abnormal power phase order or missing phase of power supply to the outdoor
unit. Check power supply wiring.
Set normal wiring.
Is the wiring correct
?
No
Yes
Cooling bypass PMV B error
Is the cooling bypass
PMV B normal
?
No
Yes
Summary of Contents for MM-A0160HX
Page 1: ...Service Manual Air Conditioner Multi Split Type System Modular Multi System HFCR407C A90 0130 ...
Page 2: ......
Page 133: ...134 20 Additional Literature and Contacts ...
Page 134: ...135 20 Additional Literature and Contacts ...
Page 135: ...TOSHIBA AIR CONDITIONING www toshiba aircon co uk MADE IN UK A90 0130 Revised April 2001 ...
