30
FUTERA FUSION INSTALLATION AND OPERATION INSTRUCTIONS
TROUBLE-SHOOTING
PROBLEM
POSSIBLE CAUSES
REMEDIES
Unit sparks but pilot will not fi re. Low gas pressure.
Check gas supply pressure during
ignition trial, adjust as necessary.
Pilot valve manual knob closed.
Open pilot valve manual knob.
Pilot valve wires not connected.
Connect pilot valve wires.
Low pilot pressure.
Check pilot pressure, adjust as necessary.
Pilot valve malfunctioning.
Replace pilot valve.
Defective fl ame sense relay.
Replace fl ame sense relay.
Pilot lights but main burners
Bad fl ame sense lead from igniter
Check sense lead & ground connections,
will not fi re.
to spark generator.
rewire as necessary.
Manual valve(s) closed.
Open manual valve(s).
Main valve not plugged in.
Plug in main valve.
Low manifold pressure.
Check manifold pressure during ignition
trial, adjust as necessary.
Defective fl ame sense relay.
Replace fl ame sense relay.
Main valve malfunctioning.
Replace main valve.
Insuffi cient heating.
Target temperature set too low.
Increasing operating target temperature
setting.
High limit set too low.
Increase high limit setting.
Unit consistently shuts down
High limit set too low.
Increase high limit setting.
on high limit.
Bad combustion
Insuffi cient air.
• Check CO & CO
2
adjust blower inlet
(high CO, yellow fl ames)
damper(s) to increase airfl ow.
• Check for air box leakage, seal as
necessary.
Dirty inlet air fi lter.
Remove inspect and clean inlet air fi lter
as
necessary.
Too much air.
Check CO & CO
2
, adjust blower inlet
damper(s) to decrease airfl ow.
Gas fl ow shuts off during
Low air (blocked fl ue/inlet) condition.
• If condition exists, check inlet, fl ue,
operation (blowers remain on).
chimney for blockage.
• Check combustion air/ventilation
openings in space.
• Check inlet air fi lter, clean and replace
as
necessary.
• Check pressure switch for correct setting.
