Gasboy CFN Series Diagnostic Manual - Manual (Page 98)

GASBOY CFN Series
3-34 03/19/04
SITE CONTROLLER II PROBLEMS
Site Controller is dead. No LED's are lit. The fan is not working.
Possible Cause Checks Corrective Action
No 115VAC power to site
controller. Check if circuit breaker is off
or tripped.
Check if 115VAC is being
switched through circuit
breaker.
If the power conditioner has a
power switch, make sure the
switch is on.
Check the power conditioner's
fuse or circuit breaker.
Check the output voltage of
the power conditioner.
Check the site controller
power cord
Turn breaker on, if off.
Replace breaker if 115VAC is
not being switched.
Turn power conditioner switch
on, if off.
If the power conditioner has a
fuse or built-in circuit breaker,
replace or reset as
necessary.
If 115VAC is measured at the
power conditioner input but
not at the output, replace the
power conditioner.
Make sure both ends of the
site controller power cord are
installed properly
Site controller power switch is
off. Check the site controller
power switch Turn site controller power
switch on, if off.
Blown fuse in AC power inlet
on rear of Site controller. Check the fuse with an
ohmmeter. Replace fuse, if blown. If fuse
blows again, replace power
supply.
Defective AC filter/power inlet. Measure the voltage on the
AC connector of the power
supply PC board Replace the RF filter module
if 115VAC is not measured
(Continued)