DRIFT TEST WAITING Low

Johnson Starley DRIFT TEST WAITING Fault Code

Also written as DRIFTTESTWAITING — same fault.

The Johnson Starley DRIFT TEST WAITING fault code means: your heater is temporarily pausing while it carries out a routine internal calibration check to ensure the fan is running at the correct speed.. It appears on 1 Johnson Starley model in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Drift test waiting
Typical repair cost £0-120 (including labour)

DIY fix possible

Wait for the unit to complete the internal checkEnsure there is a call for heat (thermostat turned up)Do not power off the unit while the test is in progress

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Johnson Starley models that show the DRIFT TEST WAITING fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Johnson Starley DRIFT TEST WAITING fault code information on this page is sourced and cross-checked against the official Johnson Starley service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026