AERCO KC1000 Heater Mar 2011 - Manual (Page 43)

SAFETY DEVICE TESTING
5-5
SSOV
ACTUATOR
COVER
SSOV
COVER
SCREW
Figure 5.6
SSOV Actuator Cover Screw Location
5.10 PURGE SWITCH OPEN DURING
PURGE
1. Set the unit’s ON/OFF switch to the OFF
position. Place the unit in manual mode and
set the valve position between 25% and
30%.
2. Remove the air/fuel valve cover by rotating
the cover counterclockwise to unlock it and
then pulling it towards you. See Fig. 5.7.
3. Remove one of the two wires from the purge
switch (Fig. 5.8) and start the unit.
4. The unit should begin to start, then shut
down and display PRG SWITCH OPEN
DURING PURGE.
5. Replace the wire on the purge switch and
depress the CLEAR button. The unit should
restart.
VALVE
COVER
Figure 5.7
Air/Fuel Valve Cover Location
5.11 IGNITION SWITCH OPEN DURING
IGNITION
1. Set the unit’s ON/OFF switch to the OFF
position. Place the unit in manual mode and
set the valve position between 25% and
30%.
2. Remove the air/fuel valve cover (Fig. 5.7) by
rotating the cover counterclockwise to
unlock it then pulling it towards you.
3. Remove one of the two wires from the
ignition switch (Fig. 5.8) and start the unit.
4. The unit should begin to start and then shut
down and display IGN SWITCH OPEN
DURING IGNITION.
5. Replace the wire on the ignition switch and
depress the CLEAR button. The unit should
restart.