Reznor RPBL, Installation, Operation And Maintenance Manual

Page: 73 / 76

73
SSCBL-RPBL-IOM (10-22) 149159-C
BRACKET
SCREWS
TOP BAFFLE
SUPPORT SCREWS
BAFFLE SCREWS
AIRFLOW BAFFLES
BOTTOM BAFFLE SUPPORT
TOP BAFFLE
SUPPORT
Figure 52. Airflow Baffles
TROUBLESHOOTING
NOTE: If the furnace is equipped with electronic modulation option AG39, AG40, AG41, or AG42,
see
Figure 40
for additional troubleshooting guidelines.
Table 32. General Troubleshooting
Symptom Probable Cause Remedy
A . Venter
motor will not
start
1 . No power to furnace Turn ON power and check supply fuses or circuit breaker
2 . No 24V power to venter relay Turn up thermostat and check control transformer output
Check for loose or improper wire connections
3 . Defective venter relay Replace defective part
4 . Defective motor or capacitor Replace defective part
B . Pilot will
not light
with venter
operating
1 . Manual valve not open Open manual valve
2 . Air in gas line Bleed gas line
3 . Dirt in pilot orifice Remove pilot orifice and clean with compressed air or solvent
4 . Gas pressure too high or too low Adjust gas pressure (refer to Measure and Adjust Manifold (Outlet) Gas
Pressure section)
5 . Kinked pilot tubing Replace tubing
6 . Pilot valve does not open If 24V power is available at valve, replace valve
7 . No spark
a . Loose wire connections
Ensure that all wires connections are solid
b . Transformer failure Ensure that 24V power is available
c . Incorrect spark gap Maintain spark gap at 7/64 inch for RPBL models or 0 .100 inch for SSCBL
models
d . Spark cable shorted to ground Replace worn or grounded spark cable
e . Spark electrode shorted to ground Replace pilot if ceramic spark electrode is cracked or grounded
f . Drafts affecting pilot Ensure that all panels are in place and are tightly secured to prevent drafts
at pilot
g . Ignition control not grounded Ensure that ignition control is grounded to furnace chassis
h . Faulty ignition controller If 24V power is available to ignition controller and all other causes have been
eliminated, replace ignition control
8 . Optional lockout device interrupting control
circuit due to above causes
Reset lockout by interrupting control at thermostat
9 . Faulty combustion air proving switch Replace combustion air proving switch