97
14
Troubleshooting
Diagnostic Procedure for Check Code
Check code
Operation cause
1. Inverter IOL operation
2. Service valve closed
[E5]
3. Cooling bypass PMV error
Inverter IOL operation
4. Miswiring of communication between indoor and
outdoor units
Is the IOL circuit normal
?
1.Connector
2.Wiring
3.Outdoor P.C. board
Is the cooling bypass PMV B
normal
?
Is wiring correct
?
Repair IOL circuit.
Cooling bypass PMV B error
Set normal wiring.
Open valves fully.
No
Yes
Are the gas pipe and liquid
pipe service valves of the
outdoor unit fully open
?
No
Yes
No
Yes
No
Yes
Insufficient refrigerant,
blockage, pipe breakage.
(Check miswiring of the outdoor unit according to miswiring check function.)
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 ...