Midea MRBT-60CWN1-D - Accessory

MCAC-RTSM-2015-01 60Hz R410a ClimaMaster Tropical Rooftop Package Unit
77
7) Condenser high temperature protection
Yes
No
No
Yes
Yes
No
No
Yes
Replace the Outdoor PCB.
Is the electric resistance of condenser high temp
sensor answer for
Appendix 1
?
Check:
Heat dispersion function of outdoor heat exchanger is unqualified:
For example, the heat exchanger is dirty, air-outlet and air-back line is
short-circuited, outdoor fan stops running or air speed is over-low, inlet
and outlet air is blocked in heat exchanger, etc.
Check:
There is air or nitrogen in system (air comes from the incomplete
vacuum drying, and nitrogen is caused by directly pressurizing to ball
valve), symptom: Pressure value of high/low is high, discharge and suction
temperature is high, current is large, there may be abnormal noise in
compressor, pressure gauge is jittering.
Replace the sensor
Remove the problem
Remove the problem
Remove the problem
Check:
System liquid side pipeline is blocked, for example, pipe is
squashed or body of valve is blocked, or stop valve has not been opened
(this situation often happens under high-pressure protection firstly).