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Remote
Alarm
controller
contents
alarm display
E14
Settings failure
E15
Automatic address
setting failure
E16
Automatic address
setting failure
E20
Automatic address
setting failure
E22
Miswiring error
E31
Communications
trouble within unit
H01
Over-current error
Judgement conditions
Main unit in simultaneous
operation multi control duplicated
(Outdoor unit detected)
Insuffi cient indoor unit capacity
Excessive indoor unit capacity.
Outdoor unit cannot receive any
serial signals from indoor units.
• Inter-unit connection are
miswiring error.
• Missing phase for the outdoor
unit power supply
No communication possible with
MDC for 3 minutes or longer
Inverter stops after alarm is
detected.
5-7
Eliminating
Judgement and correction
condition of alarm
Power reset recovery 1.Check inter-unit control
wiring.
2.Check indoor unit
combination.
Power reset recovery 1.Check inter-unit control
wiring.
2.Check indoor and outdoor
unit control PCB.
Power reset recovery 1.Check inter-unit control
wiring.
2.Check indoor and outdoor
unit control PCB.
Power reset recovery 1.Check inter-unit control
wiring.
2.Check indoor and outdoor
unit control PCB.
Power reset recovery Check wiring.
Automatic recovery
Check outdoor unit control
PCB.
Recovery at restart
1.Refrigerant cycle abnormal
overload operations
2.Screws connecting the HIC
circuit between the heat
sink are loose
3.Faulty cooling of heat sink
4.Check outdoor unit control
PCB wiring.
5
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