Samsung AM072FXVAFH series Service Manual page 148

Troubleshooting
Outdoor unit display
Operation Defrost
Indoorunit display
※ ● : ON ◑ : Flash ×: OFF
Judgment Method ∙ Refer to the judgment method below.
Cause of problem ∙ Outdoor Cond Out sensor breakaway/defective/ relevant path blocked.
1. Judgment Method
1) No inspection for Cooling operation.
2) For heating operation (Each of the conditions below needs to be satisfied for more than 20 minutes.)
1. Point of enter.
Detected only when heating operation.(Except main heating operation)
Compressor operation maintained 40 minutes after start.
2. Point of enter
l Tcondout_real-Tcondout_ini l < 2
Tcondout_ini : Condout out temperature just before the compressor operating starts.
Tcondout_real : Condout temperature of the current compressor.
2. How to check
sensor and the sensor holder correctly
resistance value reasonable?
n the value of the sensor when operating from
4-52
(Water Cooled)
Duct, Cassette (1/2 Way),Console, Celing
Timer Fan
× × ◑ ◑
maintain conditions during 40 minutes.
Is the Cond Out
attached?
Yes
Is the Cond Out sensor
(Refer to E231)
Yes
Are there any changes
stop to heating?
Yes
Complete
Cassette (4/Mini4 Way)
Filter/MPI Operation Defrost Timer
◑ ◑ ◑
×
No
No
No
Wall-mounted (NeoForte)
Filter Operation Timer Turbo
◑ ● ◑ ◑
Re-insert sensor.
Re-attach sensor holder.
Defective Sensor : Replace Sensor
Blocked Sensor Path :
Change heat exchanger Ass'y
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