Electric Heater Control 2; Base Pan Heater Control - Panasonic CS-XE9WKUAW Service Manual

13.14 Electric Heater Control 2


During Error happened, air conditioning unit will stop operation, TIMER LED will blink and indoor vane closed.

Electric heater can be switch ON when fullfill the starting condition as follow except 2 errors.
H14 (Indoor intake air temperature sensor abnormality)
o
H19 (Indoor fan motor mechanism lock)
o

Starting condition
When all condition (1+2+3+4) are fulfilled.
Operation ON
o
Indoor Heating mode
o
Error happened Except error H14 and H19
o
Temperature different control
o

Control content
Indoor unit will start operate when receive operation ON signal from remote controller.
o
Indoor fan speed
o
 For error
 Other errors
minimum fan speed = Lo Fan
Once Electric heater switched ON, It will operate at least 3 minutes.
o

13.15 Base Pan Heater Control


Specification:
Power: 100 W
o
Voltage: 230 V
o

Purpose:
To control base pan heater cable operation to melt ice on base pan during heating operation
o

Starting conditions:
When outdoor air temperature less than or same 5°C and A/C operation is heating
o

Control contents:
Power supply to base pan heater is ON
o

Cancel conditions:
When outdoor air temperature exceeds entry condition by 2°C after deice OR
o
When operation is not at heating mode
o
Temp difference
(Remote controller setting -
Intake air temperature)
+2
+1
H23 - Indoor heat exchange sensor 1 abnormality
H24 - Indoor heat exchange sensor 2 abnormality
H27 - Outdoor air temperature sensor abnormality
H28 - Outdoor heat exchange sensor abnormality
When air conditioning is
switched ON
Heater ON
Heater OFF
(Fan speed higher than other error because the
outdoor unit compressor will still run at preset
frequency about 27Hz (H23, H24) and
77
ON by
Temp difference ≥ 2.0deg
OFF by
Temp difference ≤ 1.0deg
Me Fan
40Hz (H27, H28)