Stanley ST-70T-SS-E - Troubleshooting Guide

© 2018 Pinnacle Climate Technologies, Inc.
NEVER LEAVE HEATER UNATTENDED WHILE BURNING OR
WHILE CONNECTED TO A POWER SOURCE
12
Troubleshooting Guide: ST-70-SS-E / ST-70T-SS-E / ST-125-OFR-E
Problem Possible Cause Solution
Heater fires, but shuts down after a
short period of time.
1. Dirty Fuel Filter.
2. Nozzle Dirty.
3. Photocell Dirty.
4. Photocell not installed properly.
5. Photocell Defective .
6. Improper electrical connec-
tion between Circuit Board and
Photocell.
7. Cooling Fan is obstructed
8. Improper pressure.
1. Clean/replace Fuel Filter.
2. Clean/replace Nozzle
3. Clean/replace Photocell .
4. Adjust Photocell position.
5. Replace Photocell.
6. Check wiring connections (See
Wiring Diagrams, Page 11).
7. Check to be sure cooling fan is not
obstructed.
8. Adjust pump pressure.
Heater will not operate, or motor
runs for short time.
1. No Paraffin/diesel in fuel tank.
2. Corroded Spark Plug or incorrect
plug gap.
3. Dirty Fuel Filter.
4. Dirty Nozzle.
5. Moisture in Fuel/Fuel Tank.
6. Improper electrical connection
between Transformer and Circuit
Board.
7. Transformer Wires not connected to
Spark Plug.
8. Defective Transformer.
1. Fill tank with fresh Paraffin/diesel.
2. Clean/replace Spark Plug.
3. Clean/replace Fuel Filter.
4. Clean/replace Nozzle.
5. Rinse out fuel tank with clean fresh
Paraffin/diesel.
6. Inspect all electrical connections.
(See Wiring Diagrams, Page 11).
7. Re-attach Transformer wires to
Spark Plug.
8. Replace Transformer.
Fan does not operate when heater
is plugged in and Operating Switch
is in the “ON” position.
1. Broken electrical connection
between Circuit Board and motor.
2. Not enough amps available to power
heater.
1. Inspect all electrical connections on
Wiring Diagrams (Page 11).
2. Use a new extension cord or try
another electrical socket.
Heater makes grinding noise.
1. Air in fuel pump. 1. Sound will stop after 3 seconds. If
grinding sound continues, add fuel to
tank.
Heater does not turn on and the
lamp is not lit.
1. Temperature limit sensor has over-
heated.
2. No electrical power.
3. Fuse break down.
4. Improper electrical connection
between Temperature Limit Sensor
and Circuit Board.
1. Push Operating Switch to “OFF” and
allow heater to cool for 5 minutes.
Push Operating Switch back to “ON”.
2. Check power cord and extension
cord to insure of proper connection.
Test power supply.
3. Check/replace Fuse.
4. Inspect all electrical connections.
(See Wiring Diagrams, Page 11).
Poor combustion and / or soot
production.
1. Pump Pressure.
2. Poor fuel quality.
1. Be sure pump pressure is adjusted
correctly.
2. Be sure Paraffin/diesel is not old or
contaminated.