Troubleshooting Guide - Master MH-400T-KFA User's Manual And Operating Instructions

Problem
Heater Ignites, but main PCB shuts
off after a short period of time.
Lamp flickers and LED display
shows "E1".
Heater will not operate or motor
runs for a short time.
Lamp flickers and LED display
shows "E1".
Fan does not operate when heater
is plugged in and power switch is
in the "ON" position. The lamp is
flickering or and LED display shows
"E1" or "E2".
Lamp is flickering and LED display
shows "E3".
Lamp is flickering and LED display
shows "E4".
Lamp is flickering and LED display
shows "E5".
Other problems
© 2017, Pinnacle Climate Technologies, Inc.
NEVER LEAVE HEATER UNATTENDED WHILE BURNING
OR WHILE CONNECTED TO A POWER SOURCE

Troubleshooting Guide

Possible Cause
1. Incorrect pump pressure.
2. Dirty fuel filter.
3. Nozzle is dirty.
4. Photocell lens is dirty.
5. Photocell not installed properly..
6. Improper electrical connection
between main PCB and photocell.
7. Photocell is defective
1. No kerosene in the fuel tank.
2. Incorrect pump pressure.
3. Corroded spark plug or incorrect
plug gap.
4. Dirty fuel filter.
5. Dirty nozzle.
6. Moisture in fuel tank.
7. Improper electrical connection
between transformer and circuit
board.
8. Ignitor wire not connected to spark
plug.
9. Defective ignitor.
10. Air in fuel line
1. Thermostat is set too low.
2. Broken electrical connection
between main PCB and motor.
1. Thermostat switch has failed.
2. Short circuit
1. Sensor disconnected
1. Temperature limit safety device is
overheated
1. Poor combustion
- Flames extending beyond heater
- Low heat output
2. Power failure
- No power supply to heater
14
Solution
1. Adjust pump pressure (see page 10).
2. Clean / replace fuel filter (see page 10).
3. Clean / replace Nozzle (see page 8).
4. Clean / replace photocell (see page 9).
5. Adjust photocell position (see page 9).
6. Check wiring connections
(see wiring diagram on page 11).
7. Replace photocell (see page 9).
1. Fill tank with fresh kerosene.
2. Adjust pump pressure (see page 10).
3. Clean / replace spark plug (see
page 9).
4. Clean / replace fuel filter (see page 10).
5. Clean / replace nozzle (see page 8).
6. Rinse fuel tank with clean, fresh
kerosene (see page 7).
7. Inspect all electrical connections
(See wiring diagram on page 11).
8. Re-attach ignitor wire to spark plug
(see page 9).
9. Replace ignitor.
10. See air bleed directions, page 10.
1. Rotate thermostat to a higher
setting
2. Inspect all electrical connections
(see wiring diagram on page 11).
1. Replace thermostat switch (see
wiring diagram on page 11).
2. Inspect all electrical connections
(see wiring diagram on page 11).
1. Check limit control thermostat and/
or check sensor connection
1. Wait until unit cools down.
1. Poor combustion
- Align the red mark between the air
screw and pump body
2. Power failure
- Check / replace fuse
Kerosene Forced Air Heater User's Manual