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9.2.2 Indoor / outdoor unit’s communication diagnosis and solution(E1)
Error Code
E1
Malfunction decision
conditions
Indoor unit does not receive the feedback from outdoor unit during
110 seconds and this condition happens four times continuously.
Supposed causes
●
Wiring mistake
●
Indoor or outdoor PCB faulty
Trouble shooting:
Measure Vs.
Is the voltage moving
alternately between -25V to 25V?
(Vs is the voltage between S and N of
outdoor unit. Red pan-S, Black pan-N)
Measure Vs.
Is the voltage moving
alternately between -25V to 25V?
(Vs is the voltage between S and N of
outdoor unit. Red pan-S, Black pan-N)
Yes
Power off, then restart the unit 2 minutes later
Power off, then restart the unit 2 minutes later
No
Replace the outdoor main PCB.
Power on. Is the error
extinguished?
Replace the outdoor main PCB.
Power on. Is the error
extinguished?
Check the outdoor wiring connection
Check the outdoor wiring connection
Replace the indoor main PCB.
Power on. Is the error
extinguished?
Replace the indoor main PCB.
Power on. Is the error
extinguished?
Yes
Replace the outdoor main PCB.
Replace the outdoor main PCB.
No
Replace the indoor main PCB.
Replace the indoor main PCB.
No
Check the indoor wiring connection
Check the indoor wiring connection
Yes
Yes
Summary of Contents for YHKE09XEEAMH-RX
Page 8: ...6 For 7K INDOOR YHKE09XEEAMH RX For YHKE12XEEAMH RX For YHKE18XEEAMH RX...
Page 9: ...7 For YHKE24XEEAMH RX...
Page 13: ...11 For YHKE24YEEAMHO X MOCA30 24HFN1 QRC8GW...
Page 23: ...21 6 2 Outdoor Unit YHKE09YEEAMHO X YHKE12YEEAMHO X...
Page 24: ...22 YHKE18YEEAMHO X YHKE24YEEAMHO X...
Page 53: ...2016 Johnson Controls Inc www johnsoncontrols com Doc No M Pyrenees 160929...