Haier HPU-42H03 User Manual - Page 23

When problems occur? Before ask for services, please first check your unit against following. Air conditioner won't start. Is power supply switch Is city power supply normal? Is leakage current breaker turned on? activated? Power supply switch is not set at ON. Power failure? This is very dangerous, please disconnect power supply immediately and contact your dealer. Poor cooling or heating Are operation controlls adjusted correctly as specified? Is air filter too dirty? Are there any obstacles at inlet or outlet grill? Proper temp Are horizontal louvers at up position (in heating mode)? Any doors or windows left open? Poor cooling Is there any direct sunlight If there are unexpected heat Too many people in the room? in the room? sources in the room? If your unit still can't work properly after above mentioned checks, or following problems occur, please stop it immediately and contact your dealer. Fuses or circuit breakers often blow out. Water comes out in cooling/dry operation. Operation is abnormal or sound is heard. If the fuse on PC board is broken please change it with the type of T.3.15A/250V. 21