Troubleshooting
4-40
Samsung Electronics
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Service Valve Auto Inspect
(Print S-net pro result report “Inspection required”)
(Operation)
◑
(Timer)
◑
(Fan)
◑
(Filter)
(Defrost)
t
Malfunction of service valve lock or 4-WAY VALVE or MAIN EEV
t
Please refer to determining method below
Outdoor unit display
Indoor unit display
Criteria
Cause of problem
●
When “Inspection required” is determined for service valve, an error will be displayed on the relevant outdoor unit.
●
When “Inspection required” is determined for service valve, auto inspect will end. If service valve is being inspected, please inspect the
service valves of both liquid line and gas line at the same time.
●
If 4-Way valve, Main EEV inspection is required, please differentiate by analyzing the Data after running heating operation or test-run for
at least 1 hour.
●
Normal inspections may be difficult if the outdoor unit is implanted or if defrost operation is running.
In this case, please run heating operation or test-run for at least 1 hour.
●
Errors may occur even in normal conditions if outside of the guaranteed range.
Yes
Yes
Yes
Is the service valve
of the installed outdoor unit
open?
Open service valve
Inspect 4-way valve,
Main EEV Inspect system for leaks
Insert vacuum/refrigerant
Did the 4-way valve,
Main EEV run normally?
Is there a suitable
amount of refrigerant
in the system?
1. Run test-run mode for at least 30 minutes
2. Run air operation for at least 10 minutes
3. Re-start auto inspect mode
No
No
No
❈
Please refer to 4-Way v/v, Main EEV inspection method
❈
Problematic 4-WAY VALVE operation symptoms
- Refrigerant-induced noise during compressor operation and Accum.
Intake side pipe temperature will be maintained at more than 10°C above
evaporation temperature
- During heating, indoor side Eva.In/Out temperature will be maintained at
minus (-) °C
❈
Problematic Main EEV operation symptoms
- During heating operation there will be faulty compressor intake overheat
control
: If operations are faulty when completely opened, the target degree
of overheating (1°C) will not be reached (0°C) while a low compressor
discharge temperature will be maintained
: If operations are faulty when completely closed, low pressure will fall and
the intake overheating of the compressor will increase excessively.
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