York YJU3YH019BARRA-X, Installation Manual

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15
Trouble shooting
Malfunction
Code
Diagnosis Malfunction Code
1
Faulty of outdoor unit EEPROM Communication failure
between Module and ECU
Faulty of outdoor unit EEPROM
2
Communication cables broken or not well connected.IPM
overcurrent or short circuit
IPM on the module overcurrent,or short circuit
4
Communication failure between Module and ECU
Communication cables broken or not well connected.
Communication cables broken,or not be well connected,or faulty main
ECU,or faulty module
5 Module operated overload Module worked overload
6
Module low or high DC voltage (under 192V or above
375V)
VDC
£…
192V or VDC
£
375V
8
Discharging temperature overheating.Lack of refrigerant,
ambient temperature too high or PMVs blocked.
Discharging temperature overheating.Lack of refrigerant,ambient
temperature too high or PMVs blocked.
9 Malfunction of the DC fan motor Fan is blocked,or the terminal is disconnected from the ECU
10 Malfunction of defrosting temp. sensor(Te) Sensor disconnected,or broken,or at wrong position or short circuit
11 Malfunction of compressor suction temp. sensor (Ts) Sensor disconnected,or broken,or at wrong position or short circuit
12 Malfunction of ambient temp. sensor(Ta) Sensor disconnected,or broken,or at wrong position or short circuit
13 Malfunction of compressor discharge temp. sensor (Td) Sensor disconnected,or broken,or at wrong position or short circuit
15 Communication failure between indoor&outdoor unit
Wrong connection,or the wires be disconnected,or faulty ECU,or faulty
power supply
17 4-way valve switching failure Coil of 4-way valve is disconnected,or faulty outdoor ECU
18 Module overcurrent / Module switch failure Module switch failure,or faulty module
20 Indoor overload Indoor overload
21 Indoor frosted Indoor frosted
23 Module temperature too high (Overload Protecter)
Module temperature too high,or the temperature sensor broken(detected
by the ECU)
24 Compressor overcurrent Over current of the compressor,or malfunction of the module
25 Input overcurrent
Over current of the system,or malfunction with indoor or outdoor fan
motors,or faulty ECU
26 MCU reset MCU on the ECU reset
27 Module current detect circuit malfunction Current detect circuit broken,or faulty module
28 Malfunction of liquid pipe temp. sensor for indoor unit A Sensor disconnected,or broken,or at wrong position or short circuit
29 Malfunction of liquid pipe temp. sensor for indoor unit B Sensor disconnected,or broken,or at wrong position or short circuit
30 Malfunction of liquid pipe temp. sensor for indoor unit C Sensor disconnected,or broken,or at wrong position or short circuit
31 Malfunction of liquid pipe temp. sensor for indoor unit D Sensor disconnected,or broken,or at wrong position or short circuit
32 Malfunction of gas pipe temp. sensor for indoor unit A Sensor disconnected,or broken,or at wrong position or short circuit
33 Malfunction of gas pipe temp. sensor for indoor unit B Sensor disconnected,or broken,or at wrong position or short circuit
34 Malfunction of gas pipe temp. sensor for indoor unit C Sensor disconnected,or broken,or at wrong position or short circuit
35 Malfunction of gas pipe temp. sensor for indoor unit D Sensor disconnected,or broken,or at wrong position or short circuit
36 Malfunction of gas pipe temp. sensor for indoor unit E Sensor disconnected,or broken,or at wrong position or short circuit
38 Malfunction of module temp.sensor Sensor disconnected,or broken,or at wrong position or short circuit
39 Malfunction of condensing temp. sensor(TC) Sensor disconnected,or broken,or at wrong position or short circuit
40 Malfunction of liquid pipe temp. sensor for indoor unit E Sensor disconnected,or broken,or at wrong position or short circuit
41 Malfunction of piping temp. sensor(TOCI) Sensor disconnected,or broken,or at wrong position or short circuit
42 System high pressure switch off
High pressure switch is disconnected,or high pressure switch is broken,or
high pressure switch worked
43 System low pressure switch off
Low pressure switch is disconnected,or low pressure switch is broken,or
lo w pressure switch wo rked
44
System high pressure protection.Refrigerant
overabundance,High condensing temp. or malfunction of
fan motor.
Tc too high and faulty outdoor fan motors when cooling,or faulty indoor
fan motor when heating,or refrigerant overabundance.
45
System low pressure protection.Refrigerant shortage,Low
defrosting temp., or malfunction of fan motor.
Te too low and faulty outdoor fan motors when heating,or faulty indoor
fan motor when cooling,or refrigerant shortage.
46 Malfunction of module temp.sensor Sensor disconnected,or broken,or at wrong position or short circuit