Haier H2SM Series Service Manual page 30

LED1 of outdoor pcb flashes 5 or 9 times outdoor unit A or B's coi sensor
whether terminal CN2 on
outdoor PCB contact well?
YES
Pull the sensor out of the mainboard
5) Measure the value of resistance Between its two
jumpers
6) Measure the temperature of
B's coi
Check the value of the
sensor to see whether the
sensor is damaged or not?
YES
The outdoor PCB is broken, replace a new one
H2SM-14/18C03/R2
outdoor unit A or
failure CN2
NO
Pull out the terminals on the outdoor mainboard and
reinsert them
NO
Sensor is broken,replace it with new sensor
2 6