Samsung AC024BXUPCH - Comp. down Due to High Pressure Protection Control - (E407)

Troubleshooting
4-14 Samsung Electronics
4-2-8. Comp. Down due to High Pressure Protection Control - (E407)
Open the Service Valve
Replace pressure sensor
Pipe inspection
Check Thermostat Settings
Check the relevant EEV
Replace relevant component
(motor or fan)
Connect S-net and Manifold Gauge.
(essential requirement)
No
No
Yes
Yes
No
No
Outdoor unit display
( Air Cooled )
Judgment Method • Value of the high pressure sensor is detected at 568.9 psi (40kg/ ㎠ ) or more
Cause of problem
<Heating Operation>
• Service valve locked/Excessive refrigerant
• Indoor Unit fan motor problem (constrained, defective)
• Indoor heat exchanger is contaminated
• Simultaneous operation of Heat-Pump and Furnace
1.
Cause of problem
Yes
Yes
No
No
Yes
Yes
Are all service valves open?
Is the S-net
estimated value and theManifold Gauge
value in range?
Are there any blockage inside
the pipe? (filter etc.)
Do Heat-Pump
and Furnace operate at
the same time?
Check the refrigerant amount
Heating test mode
Are the outdoor unit EEV normally operation
Indoor fan operating normaly for the heating?