OFTEC Heat Pump Practice Questions - OFTEC Heat Pump Technician Assessment (OFT21-504A G D) Exam

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Before working on the electrical supply to a heat pump outdoor unit, what is the correct first step under safe systems of work?

Apply lock-off and tag-out to the relevant isolator after confirming the circuit is dead Rely on the unit's remote controller standby mode Disconnect the refrigerant service ports only Switch off the room thermostat and assume power is isolated

Correct Answer:

Apply lock-off and tag-out to the relevant isolator after confirming the circuit is dead

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