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Version B - For Reduction G016.J
®
Dayton Operating Instructions and Parts Manual
11
Model 3VG80
Troubleshooting Chart
Never attempt to service heater while it is plugged in, connected to propane supply, operating, or hot.
Severe burns and electrical shock can occur.
Symptom
Possible Cause(s)
Corrective Action
1. No electrical power to heater
2. Fan hitting inside of heater shell
3. Fan blades bent
4. Defective motor
1. User did not follow installation or
operation instructions properly
2. No spark at ignitor. To test for spark,
follow step 8 under Ignitor, page
13. If you see spark at ignitor, have
heater serviced by qualified service
person. If no spark seen:
A) Loose or disconnected ignitor wire
B) Wrong spark gap
C) Bad ignitor electrode
D) Bad spark transformer
1. Propane supply may be inadequate
2. High surrounding air temperature
causing thermal limit device to shut
down heater
3. Restricted air flow
4. Damaged fan
5. Excessive dust or debris in surround-
ing area
1. Check voltage to electrical outlet. If
voltage is good, check heater power
cord for breaks
2. Adjust motor mount/fan guard to keep
fan from hitting inside of heater shell.
Bend motor mount/fan guard if
necessary
3. Replace fan. See Fan, page 8
4. Replace motor. See Motor, page 7
1. Repeat installation and operation
instructions. See Installation, page 6 and
Operation, page 6
2. A) Check ignitor wire. Tighten or
reattach loose ignitor wire. See
Figure 11, page 9 for ignitor wire
location
B) Set gap between ignitor electrode
and target plate. Gap should be
.13" to .15"
C) Replace ignitor electrode. See Ignitor,
page 9
D) Replace spark transformer. See Spark
Transformer, page 9
1. A) Refill tank
B) Provide additional and/or larger
tanks. See Propane Supply, page 5
2. This can happen when running heater in
temperatures above 85°F. Run heater in
cooler temperatures
3. Check heater inlet and outlet. Remove
any obstructions
4. Replace fan. See Fan, page 8
Use only in areas
free of high dust
content.
5. Clean heater. See Maintenance, page 7
Fan does not turn when heater is plugged
in
Heater will not ignite
Heater shuts down while running