Troubleshooting
Electrical Control System
127
For 485 communication (Models 18 to 60k)
Communication malfunction between indoor
and outdoor units
Communication malfunction between indoor
and outdoor units
E2 display
E2 display
No
Power off, then restart the unit 2
minutes later
Power off, then restart the unit 2
minutes later
Adopt shield cable/Shield
cable earthing.
Adopt shield cable/Shield
cable earthing.
No
Yes
Correct the connection.
Correct the connection.
No
Yes
Remove interference or
add magnet ring on power
wire
Remove interference or
add magnet ring on power
wire
Yes
Yes
Replace the signal wire.
Replace the signal wire.
Yes
Pull out and insert back.
Pull out and insert back.
No
No
Replace indoor main PCB, is the
error distinguished?
Replace indoor main PCB, is the
error distinguished?
Yes
Replace the outdoor Main PCB.
Replace the outdoor Main PCB.
No
Check whether
there’s any
interference.
Such as too many lamps, power
transformers? Or the signal wire
is too long?
Check whether
there’s any
interference.
Such as too many lamps, power
transformers? Or the signal wire
is too long?
Check whether the signal wire
is shield cable or whether the
shield cable is earthing?
Check whether the signal wire
is shield cable or whether the
shield cable is earthing?
Check whether the wire is
correct polarity? P to P, Q to Q,
E to E?
Check whether the wire is
correct polarity? P to P, Q to Q,
E to E?
Check whether the signal wire
is broken?
Check whether the signal wire
is broken?
Check whether the signal wires
insert on PCB well?
Check whether the signal wires
insert on PCB well?
E1
Содержание MUCR-H6 Series
Страница 15: ...Air Velocity Distributions Reference Data Indoor Units 13 30 42K Cooling Heating ...
Страница 16: ...Air Velocity Distributions Reference Data 14 Indoor Units 48 60K Cooling Heating ...
Страница 21: ...Field Wiring Indoor Units 19 10 Field Wiring ...
Страница 30: ...Static Pressure 28 Indoor Units 5 Static Pressure MUCR 12 H6 MUCR 18 H6 ...
Страница 31: ...Static Pressure Indoor Units 29 MUCR 24 H6 MUCR 30 H6 ...
Страница 32: ...Static Pressure 30 Indoor Units MUCR 36 H6 MUCR 42 H6 MUCR 48 H6 MUCR 48 H6T MUCR 60 H6T ...
Страница 41: ...Service Space Indoor Units 39 3 Service Space ...
Страница 52: ...50 Indoor Units 10 Field Wiring ...
Страница 61: ...Field Wiring Indoor Units 59 10 Field Wiring MUCSR 12 H6 MUCSR 18 H6 ...
Страница 64: ...Dimensions 62 Outdoor Units Model Unit mm W D H W1 A B 48 60 952 415 1333 1045 634 404 ...
Страница 95: ...Refrigerant pipe installation Installation 93 ...