Wire Breaking Error - Samsung AM072/096/120/144FXVAFH Service Manual

4-4-40 CH wire breaking error
Outdoor unit display
Operation Defrost
Indoorunit display
×
※ ● : ON ◑ : Flash × : OFF
Judgment Method
. Refer to the judgment method below.
Cause of problem
. CCH Connector PCB is not connected / Compressor Top sensor breakaway / Own problem of CCH
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?
Is CCH resistance normal?
(500~700Ω/infinite for disconnection)
Does the E445 error occur even after
the outdoor unit K3" RESET?
Samsung Electronics
( Air Cooled )
Duct, Cassette (1/2 Way),Console, Celing
Timer Fan Filter/MPI Operation Defrost
× ◑ ◑ ◑
Yes
Yes
Yes
Yes
Replace the PCB.
Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Timer Filter Operation
× ◑ ◑ ◑ ●
No
No
Fix the compressor Top
temperature sensor in
No
No
Troubleshooting
Timer Turbo
◑ ◑
Connect.
correct position.
Change CCH.
Normal Operation.
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