Description
Dometic / Atwood 90277 is the pressure switch identified as item 14 in Atwood's factory parts diagram for the OD50 and OD50CW on-demand LP-gas water heaters. It is an appliance-mounted control-system component, not the wall-mounted power on/off switch described in the earlier catalog listing.
Manufacturer-documented applications
- Atwood OD50 and OD50CW on-demand water heaters (factory service manual, MPD 90222)
- Atwood OD5001 and OD5001CW models in their replacement-parts breakdowns
- Atwood OD045 in the model-specific parts breakdown; verify the actual heater revision
Part identification
- Manufacturer part number: 90277
- Distributor SKU: 47-0030
- Component: appliance pressure switch
- The wall power switch, pressure-relief valve 90267 and pressure elbow 90287 are separate components.
Check the model label, original pressure-switch part number, electrical terminals and pressure-sensing connection before ordering. Mounting hardware and package contents have not been confirmed for this supplier SKU. This is a safety-related control; have the water heater diagnosed and serviced according to Atwood/Dometic instructions.
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