Haier SYJS-0308 Service Manual page 34

motor together with outdoor ambient temperature heat sensitive resister; when heating, as
the condition to enter and quit from defrosting.
D. Pressure switch: used to prevent the air discharging pressure of compressor from too high.
(2) Indoor unit
A. Indoors ambient temperature heat sensitive resister: together with temperature set as the
ground to control thermostat.
B. Evaporator liquid pipe temperature heat sensitive resister, evaporator gas pipe temperature
heat sensitive resister: when cooling, as the ground to prevent the indoor unit electronic
expansion valve from to heat; according to the liquid pipe and gas pipe temperature to
calculate the evaporator pipe coil temperature, as the ground to control the cooling load,
heating cool air prevention, overload.
3.2.4 The schedule of the set numerical value of protective devices, functional parts
Item
Compressor
Functional
device
Sensors
Name
Rated output of compressor
Temperature protective switch of
compressor
Fan motor
Electronic expansion valve
(EKV-30D32)
Electromagnetic valve (download)
Pressure switch
Heat sensitive resister (outdoor ambient
temperature)
PXEC-43A-H1-2
Heat sensitive resister (compressor
discharging air)
PMM-62A-H2
Heat sensitive resister (Compressor
suction air)
PXM-43A-H6-2
Heat sensitive resister (Evaporator
temperature)
PXM-43A-H6-2
Set numerical value
Power: 1PH, 50Hz, 220~240V
Output power: 1670W
Discharging air temperature
heat sensitive resister of
compressor: Off
Rotate
780rpm/M, 560rpm/L
Cooling Running: 350pulse
When stop: 5pulse
Heating Running: overheat control
When stop: 5pulse
Action pressure:3.0Mpa
Reset pressure:2.4MPa
B value: 3700K (25 /50 )
Normal resister value
range:R
B value: 4450K (25 /80 )
Normal resister value
range:R
B value: 3700K (25 /50 )
Normal resister value
range:R
B value: 3700K (25 /50 )
Normal resister value
range:R
speed: 840rpm/H,
-
=10k
25
=50k
80
=10k
25
=10k
25