38
Connect it tightly, check
normal or not
Yes
No
Check whether the voltage
range of P-N on IPM module
is normal? DC277-356V for
18-27KBtu/h; DC277-410V
for 36-42KBtu/h
Yes
Replace the outdoor main board
Yes
No
No
Replace the inductance
Yes
PFC module protection
10.3.1.6 E6(PFC module protection)
Check whether the
connecting line between
main board and the PFC
No
module(IPM module) is
connected tightly
10.3.1.7 Communication error between the indoor PCB and display board
Yes
Yes
Yes
Replace the Display board
Replace the indoor main PCB
Check the wirings
and connection
No
Check
whether
the
inductance of PFC module
is good? If the inductance is
good, the resistance of the
two ports is 0
Trouble is solved
Replace the PFC module(IPM
module)
Power off, then restart the unit
2 minutes later
Correct the connection
or replace the wirings
Summary of Contents for RM2-053B-OU
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