Cause of error code E36

Low water cutoff.

Solution for error code E36

1. Check low water cutoff. Is amber lamp it?
Yes: Repair system piping, remove any remaining air in system and refill.
No: -> 2.

2. Check low water cutoff. Is green power lamp lit? 
Yes: -> 3. 
No: 5. 

3. Is harness plugged into control module J16?
Yes: -> 4.
No: Insert harness.

4. Disconnect harness from low water cutoff and control module J16. Check continuity if harness. Harness ok?
Yes: Replace low water cutoff.
No: Replace harness.

5. Is harness plugged into low water cutoff? Is blue/yellow harness plugged into 24 Vac transformer? Is black/white harness plugged into 24 volt harness? 
Yes: -> 6.
No: Insert harness.

6. Disconnect blue/yellow harness from transformer.Using digital meter check for 24 Vac. Is 24 to 30Vac present? 
Yes:-> 7.
No: -> 8. 

7. Connect harness to transformer. Disconnect harness from low water cutoff. Is 24 Vac at terminals 1&2? 
Yes: Replace low water cutoff.
No: Replace harness.

8. Disconnect black/white harness from transformer. Is 120 Vac measured at harness? 
Yes: Repalce transformer.
No: Replace main harness.