HAIER CHILLER
start up; if water outlet temperature is lower or equal 2
℃
, one module will start up in heating, until the water
temperature reaches 8
℃
, it will stop heating and quit the anti-freezed mode.
17. Controller specs
Rated working voltage: 220
±
20
％
VAC; power consumption
＜
10VA.
Ambient temp.: -15
～
60
℃
; relative humidity
≤
90
％
, no dew.
Working mode: continuous operation.
Average non-malfunction working time:
＞
5000hrs.
Control board external dimension: (L*W*H):165*105*28mm.
Panel dimension of wired controller (L*W*H): 160*98*11.5mm.
18. Malfunction and troubleshooting
Malfunction Probable
reasons
Solution
Wired controller can
not start up
1.Phase sequence of the main power
is wrong
2.The voltage of main power does not
meet the request
3.The communication wire is
connected badly
1.Change the phase sequence of
the main power
2.Adjust the voltage of the main
power
3.Connect the communication wire
again
Unit can not start up
after start up a long
time
1.The set temperature is too high
2.The water outlet temperature sensor
is damaged or not fixed well
3.The wired controller is set as the fan
coil simultaneous control, but in fact it
do not adopt this mode
4.Control wire is fixed well
1.Lower temperature
2.Press the sensor firmly or change
the sensor
3.Cancel the fan coil simultaneous
control function
4.Press the control wire firmly
Suction pressure is
too high
1. Thermal load is too big
2. Open degree of expansion valve
is too large
1.Lower load
2.Change expansion valve
Suction pressure is
too low
1.Lack of refrigerant
2. Open degree of expansion valve is
too little
3.Pipe or filter drier is blocked
4.Evaporating water is too low
5.Evaporator is too dirty
1.Check the leakage point, recharge
refrigerant
2.Change expansion valve
3.Clean pipeline, change the filter
drier
4.Adjust the water flow or check the
load
5.Clean the dirty
Compressor running
is too long, or not
1.Load is too big
2.Temperature is adjusted too low
1.Check the reason of overload, add
the capacity
