56
Index 1:
1.Indoor AC Fan Motor
Measure the resistance value of each winding by using the tester.
Index2:
1:Indoor AC Fan Motor
Power on and set the unit running in fan mode at high fan speed. After running for 15 seconds,
measure the voltage of pin1 and pin2. If the value of the voltage is less than 100V(208~240V power
supply)or 50V(115V power supply), the PCB must has problems and need to be replaced.
9.2.4 Open circuit or short circuit of temperature sensors diagnosis and solution
Check the connections
between temperature
sensor and PCB. Are
the connections good?
Correct the connections.
No
Yes
Yes
Replace indoor or outdoor PCB.
Replace the sensor and
c h e c k i f t h e p r o b l e m
happen again?
Check the resistance value
of the sensor via table1
and table 2, is it normal?
No
Summary of Contents for MA9A-24HR-QB4W
Page 19: ...17 MS9A 18CR QB6...
Page 20: ...18 MS9A 18CR PC4W A MS9A 05CR QD0 MS9A 09CR QB6 A MS9A 09CR QB6 MS9A 09CR QC0 MS9A 09CR QC4 A...
Page 21: ...19 MS9A 12CR QC4 A MS9A 18CR QC0 MS9A 18CR QC2 MS9A 18CR QB8 MS9A 18CR QC4 A MS9A 18CR QC0 A...
Page 22: ...20 MS9A 21HR QB6W MA9A 24HR QB4W MS9A 22CR QC0 MS9A 22CR QB8...
Page 23: ...21 5 2 Outdoor Units MOK2 07C QB6 MOK6 09C QB6 MOA1 12C QB6 MOA2 12C QB6...
Page 24: ...22 MOB 18C QB6...
Page 25: ...23 MOK 07H QB6 MOK3 09H QB6 MOB 12H QB6 MOA1 12H QB4 MOA2 12H QB6...
Page 27: ...25 MOB3 18C QB8 MOC2 18C QC0 MOB1 18CP QC0 MOB2 18CP QC0...
Page 28: ...26 MOB 18H QB6...
Page 29: ...27 MOF 18C QC4W MOF4 21H QB6W...
