Haier 1U71S2SG1FA Service Manual

Also see for 1U71S2SG1FA: Installation manual Service manual Installation manual

Contents

205C: Memory information: ON/OFF state, mode, fan speed, set temp., health, swing position;D: If the memory includes timer or sleep function, when being electrified again, timer and sleep will be cancelled;E: If the memory includes auto mode, when the jumper shows cooling only type, auto mode will change to coolingmode.1.3.18 Room Card FunctionThe unit adopts room card function(220VAC input), which only make ON/OFF control. When it is connected, the unitis ON; when it is disconnected, the unit is OFF, and the other parameters will be as default or the data in memory.A: When room card function is availableThe central control, remote control/wired control and the room card are "AND" logical relationship. On the conditionthat the room card is connected, the unit can be controlled by remote controller or wired controller; indoor unit willrun at the set state by the central controller, remote controller or wired controller; otherwise, if room card is notconnected, the unit can not be controlled.B: When room card function is not availableThe unit will be controlled by the remote controller, the wired controller or the central controller.1.3.19 Setting Method of Temperature Compensation TcompA. Wired control type unit: this function is not availableB. Remote control type unit:In cooling or heating mode, there is always with the temp. compensation.In heating mode: In 24o C heating mode, press SLEEP(or SWING) button 7 times continuously within 5 seconds,indoor buzzer sounds twice, that shows temp. compensation works. Switch on the unit inheating mode by the remote controller, press TEMP button to set the set temp., so temperature compensation=thecurrent set temp. - 24o C. For example, if the set temp. is 24o C, the temp. compensation is 0 o C; if the set temp. is25o C, the temp. compensation is 1 o C. The max. compensation temp. is 6 o C (the set temp. is 30o C). If you want tocancel it, set the temp. as 24o C.In cooling mode: In 24 o C cooling mode, press SLEEP(or SWING) button 7 times continuously within 5 seconds,indoor buzzer sounds twice, that shows temp. compensation works. Switch on the unit inheating mode by the remote controller, press TEMP button to set the set temp., so temperaturecompensation=24 o C-the current set temp. For example, if the set temp is 24o C, the temp. compensation is 0 o C; ifthe set temp. is 23 o C, the temp. compensation is -1 o C. The max. compensation temp is -8o C (the set temp is 16 o C).If you want to cancel it, set the temp as 24o C.So the temp. compensation range is +8 o C~-6 o C.1.3.20 Anti-Freezed ProtectionWhen compressor has run for over 5 minutes, to prevent indoor evaporator freezing (in cooling/dry mode), if indoormid-coil temp is below -1 degree for over 5 minutes, indoor EEV will close, and compressor will stop. When indoormid-coil temp is over about 10 degree, the unit will be normal.1.3.21 Overload Protection in Heating ModeIt is valid only in heating mode, if indoor mid-coil temp. is over about 65 degree continuously for 10 seconds, indoorwill stop; while when indoor mid-coil temp. is below 52 degree for 3 seconds, indoor will resume.