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Page 14 16943-5-0806
1. Spark electrode does not produce spark.
a. Spark electrode broken - replace.
b. Ignitor wire may not be attached to spark electrode -
attach.
c. Ignitor wire damaged - replace.
d. Piezo ignitor defective - replace.
2. Spark electrode produces spark but pilot does not light.
a. No gas to heater - turn on gas.
b. PILOT position not properly aligned - turn gas control knob
to PILOT position and depress.
c. Pilot is blocked from spider web or dirt - clean pilot, see
Figure 12, Page 12.
3. Pilot flame does not stay "ON" when control knob is
released.
a. Control knob in PILOT position not completely depressed
or held in long enough.
b. INTERLOCK latching device is operative - see "Lighting
Instructions," Page 10, Step 9.
c. Thermocouple lead not tightened into gas control - tighten
thermocouple lead.
d. Pilot flame not surrounding thermocouple - clean pilot, see
Figure 12, Page 12.
e. Inlet gas pressure too low, contact gas supplier.
f. Thermocouple defective - replace pilot.
g. Gas control defective - replace.
4. Main burner does not ignite.
a. Main burner orifice is blocked - clean, see "Main Burner
Flame Characteristics," Page 11.
b. Inlet gas pressure too low, contact gas supplier.
5. Heater keeps shutting "OFF" during normal operation.
a. Pilot is blocked - clean pilot, see Figure 12, Page 12.
b. Inlet gas pressure too low, contact gas supplier
SYMPTOMS - POSSIBLE CAUSES AND CORRECTIONS
TROUBLESHOOTING