Blocked Flue - Enerzone Euromax EP00070 Installation And Operation Manual

9.3.1 Blocked Flue

o Pressure tap (located on the exhaust blower) is blocked. Pull off the air hose from the
exhaust blower pressure tap and from the negative (white) pressure switch tap.
WARMING: THE TUBE MUST ABSOLUTELY BE DISCONNECTED FROM BOTH
ENDS AS TO NOT DAMAGE THE PRESSURE SWITCH. Blow in the air tube. If air flows
freely, the hose is fine. If air does not flow through the hose, use a thin wire to clear the
blockage.
o The flue is blocked or needs cleaning. One of the following components is obstructed or
blocked by ashes of by a foreign object; air intake shutter, combustion blower, burn pot,
heat exchangers and exhaust channels, exhaust blower and or venting system. Refer to
the maintenance section.
o The flue is not properly installed. Make sure the venting system meets the criteria in the
installation section of this manual as well as the venting system manufacturer's
instructions.
o A back draft occurred inside the flue. This can occur on a very windy day or if your
venting system does not have a proper termination.
o The pressure switch wire connections are faulty. Make sure that the pressure switch
wires and connections are not grounded or loose. Replace or replug wires if necessary.
o The pressure switch hose is disconnected. Make sure the pressure switch hose is well
installed on the exhaust blower pressure tap and on the white (-) pressure switch tap. If
not, reinstall it.
o The exhaust or combustion blower failed. Go to the troubleshooting page on the LCD
screen and test the exhaust and the combustion blowers independently (see Section 9.2
Testing Components). If one of them does not work, make sure there is power and that
blowers are well connected. If they still don't work, check fuse F4 and F5 on the control
board. A defective fuse will be darkened or will have a broken filament. If the fuses are
good, the combustion or exhaust blower is probably defective. Replace the faulty part.
o Pressure switch is defective. Even if this is very rare, the pressure switch could be
defective. To test it, go to the troubleshooting page on the LCD (see Section 9.2 Testing
Components). Start the exhaust blower. If the pressure switch square switches from the
right column to the left column, it means the pressure switch functions. If not, the pressure
switch is defective and needs to be replaced.
Euromax Pellet Stove Installation and Operation Manual
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