Instructions / Assembly

24
• If control locks out 3 times, the control enters restricted
lockout. To reset: Honeywell R7184: hold down the reset
button for 45 seconds until the LED fl ashes once. Beckett
7505: hold down reset button for 15 seconds until the
red light turns off and the yellow light turns on.
3. After fl ame is established, the ignition remains ON for
10 seconds to ensure fl ame stability. It then turns off
(interrupted ignition).
4. The circulating air blower will energize and the
temperature fan switch will close.
5. The furnace runs until the demand for heat is satisfi ed
and the burner shuts down.
6. The circulating air blower will de-energize when the
temperature fan switch opens.
WARNING:
PG Direct Ignition-Gas Gun (Power Burner)
IMPORTANT NOTES:
• If a condition exists that causes the ignition control to
go into safety lockout, meter readings must be taken
quickly after restart - within trial for ignition period.
• Always de-energize the system for at least 45 seconds
before recycling for further tests.
• The ignition control cannot be repaired. If the
troubleshooting procedure indicates a malfunction in
the control, it must be replaced.
High Gas Bills
• Check the combustion air adjustment.
• Verify the proper size orifi ce is being used.
• Check the return air fi lter is clean.
• Be sure the home is insulated, windows and doors fi t
tightly, and there are no air leaks in the heating ducts.
TROUBLESHOOTING
ELECTRICAL SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury or property damage.
Only persons trained and experienced in direct
igntion systems should service this equipment.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Before servicing, disconnect all electrical
power to furnace.
• When servicing controls, label all wires prior
to disconnecting. Reconnect wires correctly.
• Verify proper operation after servicing.
• Check room thermostat. Make sure the setting is not
higher than necessary. Low humidity levels require higher
temperatures for comfort. Perhaps humidity should be
increased.
Burner motor does not run - thermostat calls for heat.
• Defective thermostat circuit - bridge TT connections on
burner junction box. See Figure 18 (page 29). If burner
motor runs, check thermostat and connections between
furnace and thermostat.
• No voltage to burner - plug test lamp into burner plug
receptacle. If it does not light, check:
— Blown fuse, electric supply off
— Door switch not making contact
— Limit switch in open mode
— Air fi lter for proper airfl ow
— Loose wire connections
— Tripped manual reset auxiliary limit.
• 120 volts is available to burner - Test lamp does not
light. Remove junction box cover on burner, check for:
— Loose wires
— Defective transformer
— Defective motor
Burner motor does not run, no main fl ame.
• Defective centrifugal switch. Check switch operation by
removing end bell of the burner motor.
• Check for gas supply - gas line valve and control lever
are on.
• Check for burner safety lockout. (Restart burner)
• Check for 24 volts to ignition control (See Figure 18).
— No voltage at purge timer - check the centrifugal
switch in the combustion motor.
— No voltage to ignition control - check purge timer
and allow 1 minute for timer to activate.
• Check for 120 volts to ignition control. Use voltmeter at
L1 & L2 (See Figure 18).
Ignition control is powered (120v and 24v). Ignitor does
not heat up.
• Remove AMP plug from burner tube receptacle and
check for 120 volts at the plug during ignition sequence.
• Replace ignition control if 120 volts is not supplied to
AMP plug within 3 minutes of ignition cycle start.
120 volts is available at AMP plug. Ignitor does not heat
up.
1. Disconnect burner plug from furnace receptacle.
2. Disconnect AMP plug from burner tube receptacle.
3. Check ignitor circuit through receptacle with an
ohmmeter. Normal ohm reading should be between 40
to 75 ohms. An infi nite or zero ohm reading indicates
a defective ignitor and must be replaced.
5. Check for continuity from ignitor receptacle to burner
ground.
6. Check for hairline cracks in ignitor’s insulating ceramic.