2HUM18HC03/R2(DB)-SM  Wiring diagrams 
59
Domestic air conditioner
Electrify the machine again and turn it on with the remote controller, 
then measure the temperature at the exhaust temperature sensor of 
the compressor on the outdoor unit 
the temperature exceeds 
110  shortly after the ć
machine starts u
?
1) The cryogen may have been leaked during 
installation, or there may be leakage in the piping 
system. 
2) There may be other causes to make the exhaust 
temperature too high. 
Malfunctions occur after running for some time even 
though the measured temperature is below 110ć. Pull 
out the exhaust sensor and measure its resistance at 
standard temperatures according to the 
resistance-temperature table 
the results deviate 
much?
The sensor is damaged. Replace the sensor 
with a new one. 
The outdoor mainboard is damaged and needs be 
re