Haier HPU-42H03 User Manual - Page 22
Trouble shooting
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Trouble shooting Followings are not problems Sound of water flowings are not problems. During unit start and 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. During unit operation, a cracking noise may be heard. This noise is generated by the casing expanding or shrinking because of temperatuer changes. Smells are generated. This is because the system circulates smells from the interior air such as the smell of cigarettes or the painting on the unit. During operation, white fog or steam comes out of indoor unit. When unit is running at places like restaurant where dense edible oil fumeis always exist, this will happen. In cooling operation, unit switches to fan To prevent frost from accumulating on indoor heat operation. exchanger, unit will switch to fan operation for a while then resume cooling operation. Unit will not restart after stop. Won't start? Though ON/OFF button is set to ON, unit won't resume cooling,dry or heating operation in 3 min after it is stopped, this is because of 3min-delay protection circuit. Please wait 3 minutes No outlet air or fan speed can't be changed in Unit will reduce fan speed repeatedly and automatically dry mode. if room temp. is too low in dry operation. In heating operation, water or steam are blown out of indoor unit. This occurs when frost accumulated on the outdoor unit is removed. (during defrosting operation) In heating operation, indoor fan won't stop even After unit stops, indoor fan will go on running until indoor if unit is stopped. unit cools down. 20