REMKO RXT xxx DC - Manual (Page 43)

9. Fault code P4: hot gas temperature too high
Is the hot gas
temperature over 115°C?
Yes
Is the connection
between the sensor
and circuit board OK?
No
Is the resistance value
for the sensor correct
(Table 2, P95)?
Replace
hot gas sensor
Yes
No
Replace outdoor
component main board
Fix the leak and top up Yes
Is there a
refrigerant leak?
No
Establish a proper
connection
No
10. Fault code P5: condenser outlet sensor triggered
Is the condenser outlet
temp. greater than
65°C?
Yes
Clean condenser
register
Is the outdoor
temperature too high?
Yes
Switch off unit
No Replace
sensor
Check the resistance
of the sensor. (Table 1,
P92-94)
Is the resistance OK?
Yes
Replace outdoor
component main board
No
Replace outdoor
component main board
No
Is the condenser
register dirty?
Are the refrigerant
pipes blocked or bent?
Siphon off refrigerant,
replace pipe / remove
blocked, perform
pressure test, drawn
vacuum and refill
Yes
No
No
Yes
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