III - 16
Service Procedures
3
SM830052
(9)
Symptom: LCD on the remote controller is displaying “CHECK E15” or “CHECK E16”. (Inappropriate indoor
combination)
1
When the outdoor unit judges a mismatch between the number of connected indoor units and the mumber of
indoor units set at the outdoor unit (S004) after automatic address setting operation, the outdoor unit sends
the indoor unit the alarm signal and displays “CHECK E15” or “CHECK E16” on the remote controller.
2
When the power is switched on when the outdoor and indoor unit addresses have already been set, if the
number of indoor units connected and the number set at the outdoor unit do not match, the outdoor unit starts
automatic address operations again. As a result, if the outdoor unit judges that there is an inappropriate
indoor/outdoor combination, it displays “CHECK E15” or “CHECK E16” on the remote controller. (But only if
the outdoor system address is 0)
(10) Symptom: LCD on the remote controller displays “CHECK P01”. (Indoor fan protection thermostat)
1. Troubleshooting
No
No
No
Yes
Yes
Yes
0340_M_I
Start
Is there 220-240 V AC between S4
and T20-3 on the indoor unit PCB?
Are T20-1 and T20-3 on the indoor
unit PCB shorted and is there 220-
240 V AC between T20-3 and S4?
Is the indoor fan wire winding
protection thermostat (49FI) off?
Replace the indoor fan.
Correct the connection
Replace the indoor unit PCB?
(11) Symptom: The remote controller LCD displays “CHECK P10”. (Indoor floating switch operation)
Yes
Yes
No
No
0341_M_I
Start
Is there 12 V DC between FS-1
and FS-3 on the indoor unit PCB?
Is the floating switch off?
• Drain pump defect
• Clogged drain
Replace the indoor unit PCB.
Correct the connection