Replacing the Water Heater High Limit

To avoid electrical shock or property damage, disconnect power before installing or servicing equipment. A qualified technician must perform the service procedures.

HOT WATER

To avoid burns, use PPE when handling overflow tube and draining unit.

Disconnect water supply.
Open drain valve and empty water pan into a shallow pan or floor drain.
Remove all doors and racks from unit and carefully lay the unit on its back. (This step may not be necessary for units on stands.)
Using an 11/32" socket or wrench, remove the nuts securing the water heater cover and remove cover.
Remove wire from high limit.
Check across the terminals for continuity. If the unit is not heating, the circuit should be closed, or read no resistance. If high limit is defective, continue onto step 6.
Remove the 2 nuts securing the high limit and remove high limit. Leave the standoffs in place.
Install new high limit in reverse order. Unit is now ready for use.