Purge Switch Open During Purge; Ignition Switch Open During Ignition - Watts Aerco BENCHMARK 750 User Manual
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Benchmark 750 – 1000 Boiler User Manual - INTERNATIONAL
6.10 PURGE SWITCH OPEN DURING PURGE
The Purge switch (and Ignition switch) is located on the Air/Fuel Valve. To check the switch,
proceed as follows:
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 by rotating the cover counterclockwise to unlock it
(see Figure 6-7).
4.
Remove one of the two wires (#171 or #172) from the Purge switch (Figure 6-8).
5.
Initiate a unit start sequence.
6.
The unit should begin its start sequence, then shut down and display PRG SWITCH
OPEN DURING PURGE.
7.
Replace the wire on the Purge switch and depress the CLEAR button. The unit should
restart.
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:
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 (see 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.
Page 82 of 170
11/03/2016
CHAPTER 6 – SAFETY DEVICE TESTING
Purge Switch Open During Purge
Ignition Switch Open During Ignition
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Ph.: 800-526-0288
OMM-0119_0A
GF-130-I
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