Applicable Systems
Greenstar GB162
Symptoms
The boiler reports an outdoor temperature sensor fault. The outdoor weather compensation sensor is not functioning.
Possible Causes
- Sensor element damaged from environmental exposure
- Sensor wiring damaged or disconnected
- Sensor position shifted or obstructed
Troubleshooting Steps
- Step 1: Test the sensor resistance
Reading matches the expected value - Step 2: Check the wiring from the outdoor sensor to the boiler
Wiring is intact - Step 3: Verify the sensor position and exposure
Sensor is correctly positioned and exposed
How to Reset
To reset: Repair or replace the outdoor sensor, then clear the alarm.
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Source: Worcester Bosch Boiler Manual, Worcester Bosch Group
Category: Home Boiler
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