REMKO RXT xxx DC - Manual (Page 40)

6. Fault code P1: high pressure fault
Is the connecting cable
from the high pressure
switch to the main
board OK? Correct
connection
No
Yes
High pressure switch
may be defective
Bypass the high
pressure switch on the
circuit board. Does the
unit work now?
Replace the high
pressure switch
Yes
Switch off unit
No
Yes
Is the outdoor
temperature too high? Check refrigerant
pipes
Is the function of the
fan on the outdoor
component OK?
No
No
Ensure fan functions
properly
Clean the register of the
outdoor component Yes
Is the register of the
outdoor component dirty?
Siphon off refrigerant,
replace pipe / remove
blocked, perform
pressure test, drawn
vacuum and refill
Yes
Are the refrigerant
pipes blocked or bent?
No
Replace outdoor
component main board
Yes
REMKO RXT...DC
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