Service manual

AUX air conditioner service manual
129
5. The Step Motor Does Not Work
⑴Items
a) Check if the input voltage is correct?
b) Check if the step motor controlling the up-down movement firmly connected to Cn2?
⑵Trouble shooting procedure
6. Heating Mode Can Work, But No Hot Air Blow
⑴Check if the set temperature is lower than the indoor temperature?
⑵Check if the indoor PCB is connected to the terminal correctly?