Carrier 42NQV025H Service Manual

Contents

– 81 –NONONONOYESYESYESYESYESGas leakage,disconnection of TS/TCsensors (Check code 02, 1C)Discharge temp. error,gas leakage(Check code 03, 1E)1C 1EGas amount check and valve clogging checkRemove TC sensor connector from the P.C. board in indoor unit.(Remove connector from the P.C. board.)Operate the air conditioner in COOL mode by TEMP button(“Beep” sound is heard if keeping pushed for 10 seconds.).The operation enters temporary operation mode which fixes opening degree of compressor speed.Check condensation at outlet of PMV, and then check operating pressure from the service port.Valve drive checkCheck the operating pressure from service port, and add gas if pressure is low.Is connecter of coil connected to inverter?Is coil of the pulse motor valve(P.M.V.) correctly set?Existence of condensation at outlet of P.M.V.If there is condensation at outlet (1/4 inch=Ø6.35mm valve side),the valve is clogged.Are temp. sensors of indoor/outdoor units correctly set to the holder?NOTE :The temperature sensors which are used to control pulse motor valveinclude indoor heat exchanger sensor (TC), outdoor heat exchanger temp.sensor (TE), outdoor suction temp. sensor (TS) and outdoor sensor (TO).Set it correctly.Set it correctly.Set it correctly.Replace coil valve.Replace valve.Add gas.Is positioning sound of valve (sound hitting to stopper) heardfrom valve when the air conditioner starts the operation after turning off powerof the air conditioner once?11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1EFILE NO. SVM-07013