SERVICING
19
S
R R SR R
S S
R SRS
RS
R S S RR
RS JR R
RED
RESET
BUTTON
COLOR
IDENTIFYING
SS R RS XR R
S S Q SRR
S R XR R
RS
S
R R SR R
S S
R SRS
RS
R S S RR
RS JR R
1. Remove burner compartment door to gain access to
the induced draft blower motor.
2. Disconnect the motor wire leads from its connection
point at the induced draft motor.
3. Using a ohmmeter, test for continuity between each of
the motor leads.
4. Touch one probe of the ohmmeter to the motor frame
(ground) and the other probe in turn to each lead.
If the windings do not test continuous or a reading is
obtained to ground, replace the motor.
5. If the windings have a continuity reading, reconnect
wires. Turn power on to the furnace and turn the
thermostat on in the heating mode. Check voltage for
115V at the induced draft motor terminals during the tri-
al for ignition. If you have 115V and the motor does not
run, replace the induced draft motor.
6. After completing check and/or replacement of induced
draft motor, reinstall burner compartment door.
7. Turn on electrical power and verify proper unit opera-
tion.
A combination redundant operator type gas valve which
provides all manual and automatic control functions required
for gas red heating equipment is used.
The valve provides control of main burner gas ow, pressure
regulation, and 100 percent safety shut-o.
S R R SR
Single stage gas valves should be tested on the furnance with
24 VAC connected to the gas valve and manometers reading
supply line and manifold pressures.
To Next Page
Loading...
