Applicable Systems
EX-300
Symptoms
The boiler reports a control power fault. The control circuit power supply is not operating correctly.
Possible Causes
- Control transformer failure
- Control circuit fuse blown
- Power supply module fault
Troubleshooting Steps
- Step 1: Check the control transformer output voltage
Voltage is at the rated value - Step 2: Verify the control circuit fuses
All fuses are good - Step 3: Test the power supply module
Module delivers the correct voltage
How to Reset
To reset: Repair the control power supply, then clear the alarm.
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Source: Miura Boiler Operation Manual, Miura Corporation
Category: Boiler
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