Applicable Systems
Cleaver-Brooks Hawk 6000 Controller
Symptoms
The boiler reports a low water cutoff. The water level has dropped below the safety cutoff level.
Possible Causes
- Feed water pump failure or not delivering
- Makeup water supply interrupted
- Boiler tube leak causing water loss
Troubleshooting Steps
- Step 1: Check the boiler water level gauge
Level is above the cutoff - Step 2: Verify the feed water pump operation
Pump runs and delivers water - Step 3: Inspect the boiler for tube leaks
No leaks detected
How to Reset
To reset: Restore the water level above the cutoff, then reset the controller.
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Source: Cleaver-Brooks Boiler Manual, Cleaver-Brooks Inc.
Category: Boiler
Published: 2026-10-09
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