Enviro EF2 Service Manual

Troubleshooting
Has the exhaust temperature sensor failed?
Replace the exhaust temperature sensor.
YES
Visual check,
is the blower
motor
turning?
The combustion blower may not be turning fast enough to generate the
proper vacuum in the fire box.
Check vacuum levels in the exhaust channel by bypassing the vacuum
switch; refer to
the hoW to’S For trouBleShooting - hoW to By-paSS the
vaCuum SWitCh and hoW to meaSure the vaCuum level produCed By the
exhauSt BloWer.
Does the motor fail to reach the minimum reading for the model shown
in
taBle 1: Stove SpeCiFiCationS For amperage, WattageS, and magneheliC
readingS?
YES
Combustion blower failure - replace the combustion blower.
NO
Check the exhaust blower voltage across the blower wires (refer to
taBle 2:
Stove SpeCiFiCationS For voltageS, and C.F.m. for actual voltage per model).
Does the blower’s voltage fail to reach the minimum reading for the model
shown in
taBle 2 with a line voltage >115VAC?
Replace the
Circuit Board.
YES
Is the air
damper
setting
incorrect?
Unit may require a change to the vent system or installation of fresh air to
correct air to fuel ratio problems.
Adjust the slider damper using a magnehelic to set it.
Excessive air may consume the fire too quickly before the next drop of
fuel, leaving completely unburned fuel in the burn pot liner.
Insufficient air will cause build up, further restricting the air flow through
the burn pot liner. This in turn will cause the fuel to burn cold and very
slowly. Fuel may build up and smother the fire.
YES
NO
54
FlasH Codes on dHC 4100:
Is the flashing light in the #2 position?
There is a vacuum failure (excluding Maxx).
YES
NO
Is the flashing light in the #3 position?
There is an exhaust temperature sensor
failure.
YES
NO
Is the flashing light in the #4 position?
The high limit sensor has been tripped.
YES

Enviro EF2 Specifications

General

Brand	Enviro
Model	EF2
Category	Stove
Language	English