Troubleshooting Guide - Master MH-150T-DFV User's Manual And Operating Instructions

Locating Your Serial Number:
Your serial number can be found on a white label on the right side cover of your heater. It will begin
with 2 digits, the letter "H" followed by 6 digits. For Example: 13H123456. Have your Serial Number
ready before calling customer service at 800-641-6996.
Problem
Heater Ignites, but main PCB shuts
off after a short period of time.
LED display shows "E1".
Heater will not operate or motor
runs for a short time.
LED display shows "E1".
Fan does not operate when heater
is plugged in and power switch is
in the "ON" position. LED display
shows "E1" or "E2".
Poor combustion and / or excess
soot production.
Heater does not turn on and the
lamp is not lit.
© 2014, Pinnacle Products International, Inc.
NEVER LEAVE HEATER UNATTENDED WHILE BURNING OR
WHILE CONNECTED TO A POWER SOURCE

Troubleshooting Guide

Possible Cause
1. Dirty input, output or lint filter.
2. Dirty fuel filter.
3. Nozzle is dirty.
4. Photocell lens is dirty.
5. Photocell not installed properly.
6. Photocell is defective.
7. Improper electrical connection
between main PCB and photocell.
1. No kerosene in the fuel tank.
2. Corroded spark plug or incorrect
plug gap.
3. Dirty fuel filter.
4. Dirty nozzle.
5. Moisture in fuel tank.
6. Improper electrical connection
between transformer and circuit
board.
7. Ignitor wire not connected to spark
plug.
8. Defective ignitor.
1. Thermostat is set too low.
2. Broken electrical connection
between main PCB and motor.
1. Dirty input, output or lint filter.
2. Dirty fuel filter.
3. Poor quality of fuel.
4. PSI is too high or too low.
1. Temperature limit sensor has
overheated.
2. No electrical power.
3. Fuse is blown.
4. Improper electrical connection
between temperature limit sensor
and circuit board.
11
1. Clean / replace air or lint filter.
2. Clean / replace fuel filter.
3. Clean / replace Nozzle.
4. Clean / replace photocell.
5. Adjust photocell position
6. Replace photocell
7. Check wiring connections.
1. Fill tank with fresh kerosene.
2. Clean / replace spark plug.
3. Clean / replace fuel filter.
4. Clean / replace nozzle.
5. Rinse fuel tank with clean, fresh
kerosene.
6. Inspect all electrical connections.
7. Re-attach ignitor wire to spark plug.
8. Replace ignitor.
1. Rotate thermostat to a higher
setting
2. Inspect all electrical connections.
1. Clean / replace air or lint filter.
2. Clean / replace fuel filter.
3. Flush fuel tank and refuel heater.
4. Use proper pressure.
1. Push power switch to "OFF and
allow heater to cool for 10 minutes.
Restart heater.
2. Check power cords for proper
connection and test the power
supply.
3. Check / replace the fuse.
4. Inspect all electrical connections.
Dual Fusion Forced Air Heater User's Manual
Solution