Hired-Hand Super-Savers (Forced Air Heaters) XL: HH-SS-175-XL - Manual (Page 10)

Part No. 4801-1016 Rev 6-09 Super-Saver XL Heater – 100 Volt Page 10 of 21
8. Servicing Instructions
8.1 United Technologies Hot Surface Ignition System
IMPORTANT!
Inspect and check operation of this appliance monthly. Follow the
instructions below. If a problem is detected, contact a qualified
technician to make any necessary repairs.
In an effort to minimize the time required to trouble shoot this system:
1. Turn off the gas supply at the main gas valve.
2. Disconnect electric power to system at main fuse of circuit breaker, if connected.
3. Visually inspect equipment for apparent damage. Check wiring for loose
connections.
4. Inspect igniter for visible cracking or scale deposits. Inspect flame sensor for
position or deposits shorting sensor to burner.
5. After performing the above inspections, restore gas supply, and electric power to the
equipment. Close thermostat contacts to cycle the system. If a “no heat” condition
persists, the three visual indicators listed below will help determine if system is
operating properly.
‰
The igniter will warm up and glow bright red.
‰
The main burner flame will ignite.
‰
The main burner flame will continue to burn after the igniter is
turned off.
Trouble shooting the system consists of checking for these three visual indications.
The Visual Check Charts define the proper action if any of these indications do not
occur.
DANGER!
DO NOT OMIT THIS STEP WHEN TROUBLESHOOTING THE APPLIANCE
Line voltage (100 VAC) could be present on the surface of the igniter if the system is not correctly wired.
Such voltage can cause death or serious injury.
1. Disconnect electric power to system at main fuse or circuit breaker.
2. Remove draft shield (if necessary) to gain access to the igniter.
3. Disconnect the igniter socket from the wiring harness.
4. Connect an AC voltmeter across the terminal connected to the white wire and the chassis ground,
and then reconnect electric power to the system.
5. If voltage exists between the terminal connected to the white wire and the chassis ground, the main
power supply lines are improperly connected to the furnace. Reverse incoming line voltage leads.
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