Aerco BENCHMARK 6000 - 6.11 IGNITION SWITCH OPEN DURING IGNITION

Benchmark 6000 Boiler Installation, Operation & Maintenance Manual
CHAPTER 6 – SAFETY DEVICE TESTING
OMM-0086_0D AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 89 of 210
GF-133 Ph.: 800-526-0288 03/20/14
Figure 6-8: Air/Fuel Valve Purge and Ignition Switch Locations
6.11 IGNITION SWITCH OPEN DURING IGNITION
The Ignition Switch (and the Purge Switch) is located on the Air/Fuel Valve. To check the switch,
proceed as follows:
Ignition Switch Open During Ignition
1. Set the unit’s ON/OFF switch to the OFF position.
2. Place the unit in Manual Mode and set the valve position between 25% and 30%.
3. Remove the Air/Fuel Valve cover (Figure 6-7) by rotating the cover counterclockwise to
unlock and lift up to remove.
4. Remove one of the two wires (#169 or #170) from the Ignition Switch (Figure 6-8).
5. Initiate a unit start sequence.
6. The unit should begin its start sequence and then shut down and display IGN SWITCH
OPEN DURING IGNITION.
7. Replace the wire on the Ignition Switch and press the CLEAR button. The unit should
restart.
Stepper Motor
Purge Position
Switch
Ignition Position
Switch
Dial
AIR IN
TO BLOWER