Haier AC24CS1ERA Operation Manual - Page 11

Troubleshooting Followings are not problems Sound of water flowing is not a problem. During unit operation or at stop, a swishing or gurgling noise may be heard. This noise is generated by refrigerant flowing in the system. Sound of cracking is heard. Smell are generated. During operation, white fog or steam comes out from the indoor unit. In cooling operation, unit switches to blowing operation. Unit will not restart after stop. Won't start? No outlet air or fan speed can't be changed in dry mode. In heating operation, water or steam are blown out of outdoor unit. During unit operation, a cracking noise may be heard. This noise is generated by the casing expanding or shrinking because of temperature changes. This is because the system circulates smells from the interior air such as the smell of cigarettes or the painting on the furniture. When unit is running at places like restaurant, etc. where dense edible oil fumes always exist, this will happen. To prevent frost from accumulating on indoor heat exchanger, unit will switch to blowing operation for a while then resume cooling operation. Though ON/OFF button is set to ON, the unit won't resume cooling, dry or heating operation in 3 min after it is stopped, this is because of 3-min-delay protection circuit. Please wait 3 minutes Unit will reduce fan speed repeatedly and automatically if room temp. is too low in dry operation. This occurs when frost accumulated on the outdoor unit is removed (during defrosting operation). In heating operation, indoor fan won't stop even if unit is stopped. After unit stop, indoor fan will go on running until indoor unit cools down. Before ask for services, please first check your unit against the following. Is power supply switch turned on? Air conditioner won't start. Is city power supply normal? Is leakage current breaker activated? Power supply switch is not set at ON. Power failure? Are operation control adjusted correctly as specified? Poor cooling or heating Is air filter too dirty? This is very dangerous, please disconnect power supply immediately and contact your dealer. Are there any obstacles in inlet or outlet grill? Proper temp Are horizontal louvers at up position (in heating mode)? Any doors or windows left open? 9