Sub 3 outdoor unit air sensor fault. PCB and measure resistance. 8 kOhm at 30�C and 13 kOhm at 20�C. replace PCB, if not replace sensor Sub 3 outdoor unit suction sensor fault. from PCB and measure resistance. 10 kOhm at 10�C and 4 kOhm at 30�C. if not replace sensor Sub 3 compressor 1 discharge sensor fault. from PCB measure resistance 237 kOhm at 20�C and 168 kOhm at 30�C. Sub 3 compressor 2 discharge sensor fault. from PCB measure resistance 237 kOhm at 20�C and 168 kOhm at 30�C.if Sub 3 outdoor unit coil sensor A fault. from PCB measure resistance. 10 kOhm at 10�C and 4 kOhm at 30�C. Sub 3 outdoor unit coil sensor B fault. Sub 3 outdoor unit liquid pipe sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10�C and 4 kOhm Sub 3 outdoor unit Subcool inlet sensor fault. Sub 3 outdoor unit Subcool outlet sensor fault. Sub 3 excessive rise of high pressure. pressures, check for non condensables, check heat exchanger coil is

Sub 3 excessive drop of low pressure. check for non condensables, check heat exchanger coil is free from Sub 3 check power supply voltage to the outdoor unit is correct (1ph 220 Vac �10% or 3ph 380 Vac �10%). check fuses, if fuses OK replace outdoor main PCB Main outdoor unit standard compressor not starting. Check output from main PCB, check contactor, and check wiringIf OK compressor faulty Sub 1 standard compressor 1 not starting. from main PCB, check contactor, and check wiring connections. Sub 1 standard compressor 2 not starting. Sub 2 standard compressor 1 not starting. Sub 2 standard compressor 2 not starting. Comms Error between Outdoor Unit and HR Box No1. Defective connection in HR unit power supply and transmissionWrong setting of the HR unit Rotary switch and DipDefective HR unit PCB Comms Error between Outdoor Unit and HR Box No2. Comms Error between Outdoor Unit and HR Box No3. Central controller wiring error.

wiring, including between controller and CNU, and IP addresses. Central controller data sending error. defective CNU or Central controller initialisation failure Central controller data receiving error. Comms cable too long or picking upIf OK, mismatching of controllers, or Central controller data receiving time out. Central controller data sending time out. cable picking up external electrical noise, or defective CNU Central controller receiving no data. Central controller incorrect address error. addresses match, if OK either comms cable picking up external electrical noise, or defective CNU Central Controller Disconnection Error, No responseCheck wiring, if OK either comms cable picking up external electrical noise, defective CNU, or Interface. Indoor unit return air sensor fault, Open or Short. Disconnect sensor from PCB and measure resistance. 8 kOhm at 30C and 13 kOhm at 20C if not replace sensor Indoor Pipe Sensor or Outdoor Sensor Assy fault, Open

Disconnect from PCB and measure resistance. Air sensor = 10 kOhm at 25C, Pipe sensor = 5 kOhm at 25C. If not replace sensor. RAC Product = Heat Sink Sensor Error, Open/Short CctCommercial Product = Condensate pump float switch risen. Check drain pan is empty, check pump is working OK. If no pump check blue jumper plug is inserted in socket CN Float. Comms Error, check your wiring, remove external pumps. Split/Multi - check volts from terminal N to 3 = 0 - 65 Vdc, Multi V -Bengal Cat Sale Oklahoma 4 Vdc terminals 3 and 4Firestone Destination Le2 Tires For Sale Inverter compressor run current high. Wall Hung Toilet Torque windings all equal 1 to 4 Ohms, Check to earth 50 MOhm minimum, check

Splits = Compressor Over Current (CT2), also see Code RAC Indoor unit BLDC Fan problem. This is caused by the Indoor fan being locked. Check fan motor is plugged in correctly, Electrically & Mechanically sound. Check the fan motor turns freely, check the AC Voltage supplied to the fan motor, this will vary from 120 V ac at low speed to 170V AC at high speed. Voltage is present the the PCB is faulty, if Voltage is present the fan motor will be Faulty. Outdoor unit fan problem. Check Outdoor fan motor is plugged in, Electrically & Mechanically sound, if not replace motor, Compressor discharge sensor fault. measure resistance 237 kOhm at 20�C, 168 kOhm at 30C. RAC Product = EEPROM Sum Check Error, text 60 for RAC Product = PSC (Reactor) Error, text 27 for help. RAC Product = Compressor Phase Current Error Text the 1, 2 or 3 digit fault code number only. If you see fault code CH07 on your indoor unit or R/Controller, only

type 7 or 07 in your text message. Indoor unit return air sensor fault. 8 kOhm at 30C and 13 kOhm at 20C if Remote controller comms error. if so check dipswitch in RC. Set to Sg for 1 unit, or Gr for group Indoor unit coil sensor fault. 10 kOhm at 10C and 4 kOhm at 30C. Split = text 21 Multi Splits and Multi V = indoor unit is set to run in a different mode from the master indoor unit. Set ALL indoor units to cooling or ALL to heating to clear. Splits = Compressor Over Current (CT2), also see Code 06. Split = Outdoor unit fan problem. motor is plugged in, Electrically & Mechanically sound, if not replace motor, otherwise replace PCB. Multi V = indoor PCB failure. RAC Product: Compressor discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20�C, 168 kOhm at 30C. Multi Fdx & Multi V text 8 Multi V indoor unit not connected to an outdoor unit. Check comms wiring is correct, and check initialisation has been