Panasonic CS-W50BTP Service Manual page 65

26.7. Defrost mode operation time chart
1. Start and completion of defrosting
a. Start
During heating mode operation (including automatic heating), after the 45 minutes of defrosting cycle time has passed,
defrosting starts if the temperature detected by the outdoor unit heat exchanger outlet sensor is 2°C or lower continuously
for 5 minutes.
However, if the outdoor unit fan is stopped, the start of defrosting will be delayed by 5 minutes.
Then, the defrosting cycle will be 50 minutes from the start of heating mode operation.
b. Completion
Defrosting mode operation will stop if the outdoor unit heat exchanger outlet sensor is 25°C or higher or after 12 minutes
of operation.
c. Forced defrosting
If P8 on the outdoor unit circuit board is shorted while the compressor is on during heating mode operation and the
temperature detected by the outdoor unit heat exchanger outlet sensor is 25°C or lower, defrosting is carried out regardless
of the current starting conditions.
2. Operation
a. During defrosting, the outdoor unit turns on the compressor and turns off the outdoor unit fan and the reversing valve.
b. The indoor unit fan operates at LOW speed for 30 seconds upon defrosting starts, After this, the indoor unit fan turns off until
defrosting is completed.
(During defrosting, the louvre of the indoor unit stays at horizontal position).
26.8. Indoor thermostat characteristics
1. Thermostat characteristics during cooling and heating modes.
Operation mode
Cooling
Heating *1
1* If jumper wire J3 on the indoor unit circuit board is disconnected, the thermostat characteristics
during heating become 2K or higher.
Setting temperature (To)
16
31
16
29~31
*1 (27~31)
65
Room temperature (°C)
Operation Differential
2.0K
O N 18.0
O F F 16.0
O N 33.0
O F F 31.0
O N 18.0
O F F 20.0
O N 31.0
O F F 33.0
4.0K
____
____
____
____
20.0
22.0
31.0
33.0