Applicable Systems
Greenstar GB162
Symptoms
The boiler reports a DHW temperature sensor fault. The domestic hot water sensor is reading incorrectly.
Possible Causes
- Sensor element drifted or failed
- Sensor wiring damaged
- Sensor position shifted from the hot water outlet
Troubleshooting Steps
- Step 1: Test the sensor resistance against the temperature chart
Reading matches the expected value - Step 2: Check the sensor wiring
Wiring is intact - Step 3: Verify the sensor is correctly positioned
Sensor makes good thermal contact
How to Reset
To reset: Replace the faulty sensor, then clear the fault.
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Source: Worcester Bosch Boiler Manual, Worcester Bosch Group
Category: Home Boiler
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