LP tank level gauge repair
Our MH's 12 gallon horizontal tank has the little round dial gauge which operates from a float in the tank. Wires run from the gauge into the data panel in the coach. The dial will not move off full...
Forum Discussion
dougrainer wrote:Dutch_12078 wrote:
Before tearing the sending unit apart, check the ground and gauge wires for continuity. The sending unit is a float operated variable resistor, and the resistance (typically 0-90 ohms) goes down as the tank level goes up. A poor/missing ground or bad gauge wire connection will cause the gauge to read full.
On edit: There are some tanks that use a reversed sending unit, where resistance (typically 240-30 ohm) goes up as the tank level goes down. On those units, the gauge will read full if the gauge wire is shorted to ground.
His problem is the tank Dial not the inside readout. The dial readout has NO wiring, just the magnetic part. Since the dial is stuck, his inside read will also show full. Doug
Oops! Right you are of course, Doug. As soon as I saw "wires", my mind jumped to the inside panel readout, instead of what the OP actually wrote. Maybe my wiring post will help someone else... :R:S
