29
Yes
No
Yes
No
No
Yes
Operation lamp blinks once in a fixed period.
Deicer P.C. board is defective.
Connection is defective.
Error was found in the signal transmitted or
received between the indoor and outdoor units.
Turn off the power supply and turn it on again to operate the unit in
cooling or heating mode.
Is the connecting wire between
the indoor and outdoor units
connected properly?
Normal
Operation lamp blinks once in a
fixed period.
Remove the devices.
Are there any devices emitting
noise near the power supply or
the connecting wire between the
indoor and outdoor units?
Yes
No
Deicer P.C. board is defective.
Turn off the power supply and turn it on again to operate the unit in
heating mode.
Normal
Operation lamp blinks 6 times in a
fixed period.
No
Yes
Yes
No
Operation lamp blinks 6 times in a fixed period.
Measure the resistance of defrost thermistor.
Check the defrost thermistor.
Connection is defective.
Is the connector CN661 on the
deicer P.C. board connected?
Defrost thermistor is defective.
Is the resistance 0 (short circuit) or
∞
(open circuit)?
Check of deicer P.C. board and outdoor fan motor
To be continued on the next page.
SUH-1VR.TH
SUH-1.6VR.TH
SUH-1.6VR2.TH
SUH-2VR.TH
SUH-2VR
1
.TH
SUH-2VR
2
.TH
SUH-2.5VR.TH
OC282-A--1.qxp 03.1.28 4:29 PM Page 29