Smoke Smell; Combustion Air Lack - PSG CADDY ALTERNA II Installation And Operating Instructions Manual

❖ I/O communication error. The information coming from the I/O board is not read by the link board. It is
possible that the telecommunication wire connecting the link board to the pressure board or the wire
connecting the pressure board to the I/O board has a loose connection. Make sure that each end of
those wires is well connected in their own terminals. It is also possible that one of these wires is
damaged. If so, replace this wire.
❖ Pressure communication error. The information coming from the pressure board is not read by the link
board. It is possible that the telecommunication wire connecting the link board to the pressure board has
a loose connection. Make sure that each end of those wires is well connected in their own terminals. It is
also possible that this wire could be damaged. If so, replace this wire. Finally, the pressure sensor on
the pressure board could be damaged. If wiring has been verified throughout and the problem remains,
the pressure board must be replaced.
10.3.10

SMOKE SMELL

❖ Venting system leaks. Inspect all vent connections. This is a pressurized venting system. All vent
connector joints must be sealed and fastened in accordance with the pellet vent manufacturer's instructions
to ensure consistent performance and avoid smoke and ash spillage
Warnings, Cautions and Recommendations).
❖ Worn gaskets. Gaskets may be allowing smoke spillage (doors, clean out traps, etc.). Make sure that all
gaskets are in good condition and replace them with original parts if necessary. Make sure the door is well
adjusted.
❖ Negative pressure. A faint wood-burning odor during ignition or shut down is normal. Although, if this
increases beyond what is considered normal or if you notice an unusual soot build-up on walls or furniture,
check your venting system carefully for leaks and make sure all gaskets are in good condition. The furnace
exhaust blower produces a negative pressure in the room. It draws air from the inside of the room, through
the furnace and then outdoors. In the same manner, other appliances can also create a larger negative
pressure. In this case, as the air naturally flows from a high pressure point to a low-pressure point, a larger
negative pressure can draw smoke from the inside of the furnace into the room. The furnace can also be
affected by other mechanical ventilation systems, causing the same effect as mentioned previously. Using a
fresh air intake will prevent negative pressure (see Section 5.8: Combustion Air). Also, make sure the
recommended maintenance schedule has been followed.
10.3.11

COMBUSTION AIR LACK

❖ Venting system is dirty. Refer to Section 9: Maintenance.
❖ The flue is not properly installed. Make certain the venting system meets the criteria in the installation
section of this manual as well as the venting system manufacturer's instructions.
❖ Inadequate fuel is used. Remove the burn pot, make sure that all openings are clear and check that no ash
has filled the tube around the igniter (Refer to Section 9: Maintenance). Also, make sure that
recommended fuel is used (see Section 6.2.1 Proper Fuel) and settings are adjusted to the type of pellets
that are being used (see Section 7.3.1: Adjusting the Combustion Level (Heat Output)).
❖ Air intake channel is restricted. Visually inspect the air intake channel that leads to the burn pot for
foreign material. Make sure that the air-intake shutter is functional and free of any obstruction.
❖ The combustion/exhaust blower failed. Go to the "TROUBLESHOOT FURNACE" page on the LCD
screen and test the combustion and the exhaust blowers independently (see Section 10.2: Testing
Components). If one of them does not function, make sure there is power and that the blowers are properly
connected. If they still don't work, check fuse B and D (see Section 11.9: Access the fuses) on the pellet
control board. A blown fuse will be darkened or will have a broken filament. If the fuses are in good
condition, the combustion or exhaust blower is probably defective; Replace the faulty part.
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(see Section 6.1: Operation