Can I check immersion aquastat with MM


Old 10-31-20, 06:30 PM
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Can I check immersion aquastat with MM

On my old oil furnace, I have a Honeywell L4006A3X042 immersion aquastat (actually two- one for high limit and one for low limit). I'm thinking the high limit one is on the way out. Before I replace it, is there a way to check it with a multimeter? Thanx.

Old 10-31-20, 06:54 PM
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You can check the switch part for continuity using an ohmmeter.
Old 10-31-20, 09:00 PM
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Rather than replacing old technology, immersion bulb aquastat, up grade and save up to 20 % on fuel costs with out-door-rest/aqustat.

ODR's provides both hi and low level control to 1 degree F with adjustable Delta-T. Have LCD display of temperatures, settings and menus.

Read Submittal Sheet and Instructions on link:

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