⚠️ Safety Notice – Reverse Cycle Air Conditioners
This equipment must only be installed, commissioned, serviced and repaired by suitably qualified and licensed personnel.
Before commencing work, complete a task-specific risk assessment and ensure electrical isolation procedures, safe access, adequate service clearances and appropriate PPE have been considered. All work must comply with applicable regulations, standards and manufacturer requirements.
Particular care must be taken when working around electrical systems, refrigerant circuits, moving parts, roof spaces, ceiling spaces, confined spaces and working-at-heights hazards where applicable.
Do not proceed if safe access, required clearances, confined space risks or appropriate safety controls cannot be achieved and maintained.
Safety takes priority over diagnosis, repairs, installation schedules and customer expectations. If the task cannot be completed safely, it must not proceed until the risks have been adequately controlled.
Important: If E8 fault occurs on an SDHV10D1S indoor model refer to information below referring to moisture transferring through heatsink screws
Pdf attached - Residential Service Guide Ducted, Cassette, Wall-Split, Multi Systems & Add-on cooling - ES E247-A Braemar Residential Service Guide
KDHV / SDHV Fan Motor tests:
For 5-pin motor diagnostics, ensure the power is on and the system is activated, then proceed with the checks below:
To diagnose a 3-pin outdoor fan motor, ensure the power is off and the system is shut down. Then, disconnect the motor from the PCB.
Fan Motor Testing (3-Pin)
With power isolated and the fan motor unplugged, perform resistance checks between all three motor pins.
✅ Measure resistance between:
- Pin 1 to Pin 2
- Pin 1 to Pin 3
- Pin 2 to Pin 3
Expected Result
- The resistance readings should be similar across all three measurements.
- Actual resistance values will vary depending on the motor type, size, and manufacturer.
- Wire colours may vary between motors and should not be relied upon for identification.
- A significantly higher, lower, open-circuit, or short-circuit reading on one winding may indicate a faulty motor.
Note: Use the measurements to compare winding balance rather than matching a specific resistance value.
E8 fault on SDHV10D1S indoor driver PCB heat sink
