
0503RHC8RJLGBEN
31/34
8.4 F
AN
F
AULT
F
INDING
C
HART
WARNING
: Fault finding may only be carried out by appropriately qualified persons
no
no
yes
yes
Adjust thermostat
temperature
setting above ambient to
energize the fan and the
fan solenoid valve
Does the fan
operate ?
Is there 220-240V
at terminals N & 3?
Replace the
fan start relay
Replace fan
motor
Place the
system in
normal
operation