Maintenance
HPR130XD Auto Gas – 806330 5-43
Testing the flow sensor
1. Turn ON the power.
2. Measure the VDC between TP210 and TP206.
TP206 is common on PCB3. TP210 provides a filtered, 67% scaled, voltage from the flow switch. 0.45 VDC
(0.67VDC at the flow switch) equals 2.3 lpm (0.6 gpm). If the TP210 voltage reading is below 0.45 VDC and the
flow is equal to or above 3.0 lpm (1 gpm), replace the flow switch.
041993
TP 206
TP 210
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