154 | SAMSUNG
TROUBLE SHOOTING & ERROR MODE
7
Fault Diagnosis by Symptom (Cont.)
●
EC07 : When the trouble is found in the communication related part between outdoor unit pipe
thermistor.
- ED of 7-segment of outdoor unit PCB.
- Reservation lamp and filter lamp of wireless receiving board is flickering with 1Hz.
- Action item when “D” displays on the wired remote controller.
NO
YES
YES
Replace the outdoor PCB
NO
Is the voltage across the thermistor 4.9V and
higher or 0.5V and lower?
Replace the thermistor
Connect correctly and check.Is indoor pipe thermistor installed at CN41?
✽
“*” stands for the indoor unit address.
- Indoor unit pipe thermistor available or not
- Indoor unit PCB defect
Check point :
To Next Page
Loading...
