REMKO RXT xxx DC User Manual
Page 37
2. Timer light flashes at 5 Hz: communication error
between indoor unit and outdoor component
Yes
No
Establish the power
supply.
Is there voltage in the
indoor unit?
Yes
Is the cable connecting
the indoor unit and
outdoor component
properly connected?
Replace the main board
for the indoor unit or
outdoor component
No
Connect the cable
properly.
Is the cable connecting
the indoor unit and
outdoor component
damaged?
Replace the cable.
Yes
No
Is the connecting cable
shielded, and is it
earthed?
No
Use shielded, earthed
cable
Yes
5. Defrost light flashes: system error
Switch the unit into
another mode or
switch the unit off and
then back on again.
Is fault still present?
Switch the unit off an
then back on again.
Yes
3. Alarm light flashes at 1Hz: check for fault on
condenser temperature sensor or for improper
function of outdoor component (for E4, P1 and P2)
Yes
No
Correct sensor line
Connection of sensor
line OK?
Replace temperature
sensor
Yes
No
Resistance of the
sensor OK
(Table 1, P92-94)?
Replace outdoor
component main
board
4. Alarm light flashes at 5Hz:
float switch / condensation pump
No
Replace condensation
pump
Is the condensation
pump working
properly?
Yes
Set cooling mode on
the indoor unit and
allow the system to run
for a few minutes.
Is the fault still present?
Yes
Replace or repair
condensate
drain
Inspect the condensate
drain to see if it is bent.
Is the condensate drain
OK?
Replace the indoor
unit main board.
Yes
No
37