Honeywell PDX450S*F(BN,SX) Water Heater User Manual


 
PDX SERVICE PROCEDURE VII
Flammable Vapors Sensor Testing
Page 28
PDX Series
Flammable Vapor
Sensor
Step 1. Position power switch on gas control to the
“OFF” position.
Step 2. Disconnect flammable vapor sensor from
gas control.
Step 3. Using a multi-meter set to the ohms setting
check resistance of flammable vapor sensor.
(see caution below)
Resistance must be within 3,000 ohms and
48,000 ohms. If outside of this range replace
flammable vapor sensor.
Flammable Vapor Device Testing
Flammable Vapor Sensor
Electronic
pin type
Meter Probes
Multi-meter set to
ohms setting
CAUTION
DO NOT use standard multimeter probes for this test. Doing
so will damage connector. Use special electronicpin type
probes or small diameter wire pins inserted into connector.
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