Samsung AM***MXWA Series - Troubleshooting E505;E506 Errors

ENGLISH-98
Inspection and trial operation
Measure to take when E505, E506 error occurs
End
Yes
Yes
Enable vacuum mode on all outdoor units
Disable vacuum mode on all outdoor units
No.
Is the service valve of the outdoor unit
open?
Open the service valve of the outdoor unit
No.
Does the value on the pressure
sensor of the installed outdoor unit
satisfy the following?
"Max./Min. value dierence of low
pressure > 2"
"Max./Min. value dierence of high
pressure > 2"
Reset outdoor unit
Run trial operation
Analyze cycle data
Check/replace the abnormal pressure sensor
• When the auto trial operation for pressure sensor is executed before the pressure of the outdoor unit is equalized
(when there is little dierence between high and low pressure), error may occur even though the product is
normal.
• If the pressure sensor needs to be detected, all outdoor units will display the error.
• If the pressure sensor needs to be detected, auto trial operation mode will end.
• To check for the pressure sensor with the problem, run trial operation for more than 1 hour and analyze the data
to check for a problem.
CAUTION