Troubleshooting - DeWalt DXH90CFAK Instruction Manual

NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
Diagnostic Safety Shutdown and Trouble Shooting
ERROR CODE
E0 Relocation Detection Switch Error
(Unit may go through 90 second
cooldown)
E1 Photo cell error
E2 Ambient temperature sensor error
E3 HLS (High limit switch) Error
E4 Ignition failure
E5 Fan failure
E6 Power Supply failure.
E7 Backup battery boost converter
failure.
E8 14-21V failure
DESCRIPTION
1. Heater moved while in operation or
stand-by mode.
3. The Photo cell is defective.
4. Flame present before ignition.
5. Extreme ambient light.
1. Ambient temperature sensor loose.
2. Ambient temperature sensor defective.
1. High limit switch has activated.
2. HLS defective.
1. No fuel burning after ignition attempt.
2. Weak or no spark
3. Fuel Issue
1. Fan blocked.
2. Contaminated.
3. Defective.
1. Main board failure.
1. BMS (Battery Management System)
board failure.
1. BMS board failure.
REASON
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15
RESOLUTION
Restart unit.
If problem persists, contact customer service.
Have service center clean Photo cell/ replace.
Remove any liquid fuel buildup from
combustion chamber that may burn.
Rotate heater away from direct bright light.
Have service center check sensor connection.
Have service center replace sensor.
Allow unit to cool down for 15 minutes and
retry.
Have service center replace HLS.
Fill fuel tank.
Contact customer service.
Replace fuel or contact customer service.
Remove blockage.
Clean dust/debris.
Have service center replace fan.
Have service center replace Main pcba.
Have service center replace BMS pcba.
Restart unit.
Have service center replace BMS pcba.