9.4.2.3 E3(Communication malfunction between IPM board and outdoor main board) error diagnosis
and .
Error Code
E3
Malfunction decision
conditions
PCB main chip does not receive feedback from IPM module
during 60 seconds.
Supposed causes
●
Wiring mistake
●
PCB faulty
Trouble shooting:
Communication malfunction between
IPM board and outdoor main board
Is there at least one LED in
the IPM board light?
Check the signal wire between
the IPM module and the main
board, is it connected good?
Reconnect and retry. Is
error still display?
Replace IPM board, and
then check whether the
system can run normally
Replace the electric control
box
No
No
No
No
Yes
Trouble is solved
No
Yes
Replace outdoor main
board, and then check
whether the system can run
normally
No
Yes
Yes
Содержание M2OC-18HFN1-M
Страница 19: ...8 Wiring Diagrams 8 1 Wiring diagram of 1 drive 2 outdoor M2OC 18HFN1 M M2OD 18HFN1 M...
Страница 20: ...PCB board of M2OC 18HFN1 M M2OD 18HFN1 M...
Страница 21: ...IPM board of M2OC 18HFN1 M...
Страница 22: ...IPM board of M2OD 18HFN1 M...
Страница 23: ...8 2 Wiring diagram of 1 drive 3 outdoor M3OD 27HRDN1 M M3OC 30HRFN1 M...
Страница 24: ...PCB board of M3OC 30HRFN1 M...
Страница 25: ...IPM board of M3OC 30HRFN1 M...
Страница 26: ...PCB board of M3OD 27HRDN1 M...
Страница 27: ...IPM board of M3OD 27HRDN1 M...
Страница 28: ...8 3 Wiring diagram of 1 drive 4 outdoor M4OC 36HRFN1 M...
Страница 29: ...PCB board of M4OC 36HRFN1 M...
Страница 30: ...IPM board of M4OC 36HRFN1 M...
Страница 31: ...PFC board of M4OC 36HRFN1 M...
Страница 66: ...IPM for dual tri zone IPM for qua zone P N for dual tri zone...
Страница 67: ...P N for qua zone...
Страница 68: ...bridge rectifier for dual tri zone bridge rectifier for qua zone...
Страница 69: ...Remark Measure the DC voltage between and port The normal value should be 190V 250V...
Страница 71: ...Two ports of the inductance Inductance...
Страница 72: ......
Страница 77: ......
Страница 79: ......
Страница 81: ......
Страница 83: ......
Страница 96: ...6 EXV check Disconnect the connectors...
Страница 97: ...Resistance to EXV coil Color of lead wire Normal Value Red Blue About 50 Red Yellow Brown Orange Brown White...
Страница 98: ...Red Blue Red Yellow...
Страница 99: ...Brown Orange Brown White...
Страница 114: ...Screws of front panel Screws of right rear panel Screws of top cover...
Страница 122: ...Screws of big handle Screws of right rear panel Screws of water collector Screws of terminal board...
Страница 128: ......