HVAC Sales Master

Fault Code Lookup

HVAC Sales Master
C3
T3 sensor not reading correctly in cooling
This code typically points to
  • Wrong T3 sensor location
  • Failed T3 sensor
  • Failed T4 sensor
Next checks to confirm
  1. Inspect sensor placement
  2. Verify sensor readings
Escalation
Sensor correction required.
Reset behavior
Clears when sensor reads correctly.
Service Soon
Schedule repair
Need deeper detail?
Retrieve the subcode for this platform:
  1. Connect the IDS system in EasyAir App
  2. Use the contractor view to monitor heat pump health
  3. Review real-time alerts, fault codes, and checkpoint values
  4. For on-site work, use Bluetooth-enabled access to system data and historical fault codes
  5. Calculate superheat/subcool within the app for diagnostic verification
  6. Bluetooth access is retained on-site even without continued remote subscription
Tool required: Bosch EasyAir App
Source
Bosch IDS 2.0 service documentation
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