If adjustment is required refer to the water
pressure switch test/adjustment section in the I/O
Manual. IF adjustment does not correct or was not
required, go to 11F.
Inspect and test high limits
Inspect & test high limits. Verify continuity across
the temperature limit switches. IF open or wire is
damaged, replace (pg. 25). IF OK, go to 11G.
Pressure switch adjustment
Step 11E
46
Step 11F
11. Service LED ON: “LO” Code (cont.)
The water pressure switch should not need adjusting, some sites may require a water
pressure switch adjustment
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