Daikin FC Series - Page 32

Blinking Fault Codes... (continued)
Fault Code System Failure
Code 4-1
*Purge CardProblem*
No purge card or the purge card
timing has changed from the original
conguration.
a. Make sure the purge card is seated
properly.
b. Inspect the purge card and the connector
on the relay module for any damage or
contaminants.
c. Reset and sequence the relay module.
d. If the fault code reappears, replace the
purge card.
e. Reset and sequence the relay module.
f. If the fault code persists, replace the relay
module.
Code 4-2
*Wiring Problem/Internal Fault*
Pilot (ignition) valve terminal, main valve,
ignition or Main Valve 2 was on when it
should be OFF.
WARNING: Electrical Shock Hazard; Fire
or Explosion Hazard. Can cause severe injury,
death or property damage. Remove system
power and turn o󰀨 power supply.
a. Remove system power and turn o󰀨 fuel
supply.
b. Check wiring; correct any errors.
c. Inspect Pilot Fuel Valve(s), both places, and
connections.
d. Reset and sequence the relay module.
e. If the fault persists, replace the relay
module.
Code 4-3
*Flame Amplier Problem*
Flame not sensed, sensed when it should
be ON or OFF.
a. Check wiring; correct any errors.
b. Make sure the ame amplier and ame
detector are compatible.
c. Remove the ame amplier and inspect the
connections. Reseat the amplier.
d. Reset and sequence the relay module.
e. If the code reappears, replace the ame
amplier and/or the ame detector.
f. If the fault persists, replace the relay module.
Code 4-4
*Conguration Jumper Problem*
The conguration jumpers di󰀨er from the
sample taken at startup.
a. Inspect the jumper connections. Make
sure the clipped jumpers were completely
removed.
b. Reset and sequence the relay module.
c. If the fault persists, replace the relay
module.
Code 5-1
*Preignition Interlock*
Preignition Interlock fault.
a. Check wiring and correct any errors.
b. Check Preignition Interlock switches to
assure proper functioning.
c. Check fuel valve operation.
d. Reset and sequence the relay module;
monitor the Preignition Interlock status.
e. If the fault persists, replace the relay
module.
IM 684-6 • ROOFTOP SYSTEMS 32 www.DaikinApplied.com
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