Ignition Switch Open During Ignition - Watts Aerco Benchmark OMM-0124 Installation And Start-Up Manual

Benchmark 5000-6000 Boiler Installation & Startup Manual
SECTION 5: SAFETY DEVICE TESTING
STEPPER
MOTOR
DIAL
Figure 5-10: Air/Fuel Valve Purge and Ignition Switch Locations

5.11 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 Check Instructions
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 5-9, above) 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 (see Figure 5-10,
above).
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.
OMM-0123_E • GF-207 • 12/17/2019
AIR IN
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
TO BLOWER
PURGE
POSITION
SWITCH
IGNITION
POSITION
SWITCH
Page 75 of 95