31
T
roubleshooting
T10- Unit displays PRES 1
PRES 1: The pressure switch no longer detects any pressure. The side
panel must be removed to access the vacuum switch (see image 29). Verify
the tubes connection between the minihelic gauge and the vacuum switch
to the unit and see if the yellow wires are connected. After verifying, Press
the start mode without lighting the unit and check if the pressure indicates
on SM1 mode is over 0.3 w.c. Replace the pressure switch (see image 29)
if SM1 mode is displayed in red. Refer to Chapter T12 if the gauge does not
indicate pressure on SM1 mode.
Note:
Unplug the AC current an let the battery operate the unit when testing
your components.
Image 29
T11- Unit displays HOP 1
The HOP 1, the hopper door has been open for more than 60 seconds when
the unit was in operation or failure or switch poor connection.
Image 30
Hopper switch
T12- Combustion fan problems
No pressure
could be related to a defective fan. Verify the
green wiring fan connection on controller A (see image 32). Do
a cold start and see if the flywheel is running by opening the
door on the right side (see image 31). Replace the combustion
fan if it does not rotate.
Low pressure
could be related to a combustion fan’s flywheel
obstructed by ash (refer to chapter M4) or gaskets leakage
on both doors (refer to chapter M8). Refer to chapter M13 to
determine whether the chimney is not obstructed by ash.
Note:
Unplug the AC current an let the battery operate the unit
when testing your components.
Image 32
T13- Convection fan problems
No room air could be related to a defective fan. Verify the
green wiring fan connection on controller A (see image 32).
Do a cold start and see if the flywheel is running by opening
the door on the left side (see image 21). Replace the convec-
tion fan if the wheel does not rotate.
Note:
Unplug the AC current an let the battery operate the
unit when testing your components.
Image 31
Cooling flywheel
