Toyotomi CFT35A-R Service Manual page 46

d. Protection of pressure or temp.
Protection of pressure or temp.
Yes
Is it k1 or K2 open ?
Is temp. protective switch K1 open
Yes
Possible reason
1. The wires is loose to K1
2. Air or other gas in the refrigerant.
3. Heat exchanger is dirty
4. Outdoor fan or fan blade is
defective
5. Outdoor unit is in bad ventilation
6. Refrigerant is leakage
e. Open-circuit and short-circuit trouble of T3
Is connection to connector of temp. sensor good?
Yes
Check the resistance of the temp. sensor according to Appendix 1
Is it the resistance is normal?
Yes
Indoor PCB is defective.
Electrical Control
Is pressure protective switch K2 open
Yes
Possible reason
1. The wires is loose to K2
2. Air or other gas in the refrigerant.
3. Heat exchanger is dirty
4. Outdoor motor or fan blade is
defective
5. Outdoor unit is in bad ventilation
6. Refrigerant is too much
No
Replace the sensor
No
Repair connector
Troubleshooting
51