Enerzone EUROSTAR Installation And Operation Manual page 48

BLOCKED FLUE
A BLOCKAGE WAS
DETECTED BY THE
PRESSURE SWITCH
RESET DETAILS
 Pressure tap (located on the exhaust blower) is blocked. Pull off the air hose from the
exhaust blower pressure tap and the white (-) pressure switch tap. Use a thin wire to clear the
pressure tap blockage and blow through the hose. If air flows freely, the hose is fine. If air does
not flow through the hose, use a thin wire to clear the blockage.
 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.
maintenance section.
 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.
 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.
 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.
 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.
 The exhaust or combustion blower failed. Go to the troubleshooting page on the LCD
screen and test the combustion and the exhaust 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 F4 and F5 fuse on the control board.
If the fuses are good, the combustion or exhaust blower is probably defective; Replace part.
 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)
and start the exhaust blower. If the pressure switch square switch from the right column to the
left column, it means the pressure switch works. If not, the pressure switch is defective and
needs to be replaced.
48
THE FOLLOWING MAY HAVE CAUSED YOUR
PROBLEM (BLOCKED FLUE):
• THE PRESSURE TAP IS BLOCKED
• THE FLUE IS BLOCKED OR
NEEDS CLEANING
• THE FLUE IS NOT PROPERLY
INSTALLED
• A BACK DRAFT OCCURED INSIDE
THE FLUE
BACK
THE FOLLOWING MAY HAVE CAUSED YOUR
PROBLEM (BLOCKED FLUE):
• THE PRESSURE SWITCH WIRE
CONNECTIONS ARE FAULTY
• THE PRESSURE SWITCH HOSE IS
DISCONNECTED
• THE EXHAUST BLOWER FAILED
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MORE DETAILS
Eurostar Installation and Operation Manual
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