Ch Wire Breaking Error - Samsung AM080xXV Series Service Manual

Troubleshooting

4-3-40 CH wire breaking error

Outdoor unit
( Air Cooled )
display
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost
Indoorunit
×
display
※ ●: ON ◑: Flash ×: OFF
Judgment
∙ Refer to the judgment method below.
Method
Cause of
∙ CCH Connector PCB is not connected / Compressor Top sensor breakaway / Own problem of CCH
problem
1. Judgment Method (2hours after reset or power on, It will be judged once.)
① Compressor Top temperature at the time of judgment - Tini < 2℃ (※Tini : Power on or temperature of initial compressor Top after reset)
② Compressor Top temperature at the time of judgment - Outdoor temperature < 2℃
③ Outdoor temperature < 30℃
④ UP state
※ If all the conditions are satisfied at the same time : Mark the CCH wire breaking error (E445)
Is the CCH connector connected to PCB?
Is the compressor Top temperature
sensor fixed in correct position?
(500~700 Ω /infinite for disconnection)
Does the E445 error occur even after
the outdoor unit K3" RESET?
4-64
Timer Fan Filter/MPI Operation Defrost
× ◑ ◑
Yes
Yes
Is CCH resistance normal?
Yes
Yes
Replace the PCB.
Cassette (4/Mini4 Way)
◑ × ◑
No
No
No
No
Wall-mounted (NeoForte)
Timer Filter Operation
◑ ◑ ●
Connect.
Fix the compressor Top
temperature sensor in
correct position.
Change CCH.
Normal Operation.
Samsung Electronics
Timer Turbo
◑ ◑