How to perform an RCD test

RCDs Explained

An RCD, or residual current device, is a life-saving device which is designed to prevent you from getting a fatal electric shock if you touch something live, such as a bare
wire. It can also provide some protection against electrical fires. RCDs offer
a level of personal protection that ordinary fuses and circuit-breakers cannot

If your hot tub  (typically ‘Plug & Play* spas) has an RCD plug attached and before using your spa it is recommended that you carry out an RCD test on the plug of the spa. *Plug and play means that there is no additional electrical installation required to
setup your spa. These hot tubs plug into a normal wall socket. Attached to the plug is a fitted RCD to protect the spa and the electrical circuit from unforeseen circumstances. Ensure that the spa is the only load on the circuit when plugged in.

Note: Please check the plug and wiring before plugging in for any damage – if damaged contact dealer – Never run spa with bare wires showing.

WARNING: RISK OF ELECTRIC SHOCK. The RCD plug must be tested before each use. Do not use if RCD test fails.

WARNING: Before inserting the plug into a power outlet, make sure the current rate of the power outlet and the fixed wiring are suitable for the control unit. If in doubt contact a
qualified electrician. If the following steps 1,2,3,4 are successful, the spa pump is ready for use.

Types of RCD (below):













How to perform an RCD test (Canadian Spa hot tubs)

  1. Insert the plug into the RCD power outlet and turn on switch.
  2. Press “RESET” button, check if the indicator light turns red – Spa/control unit
    should power up
  3. Then, press “TEST” button, check if the indicator light is off – Spa/control
    unit should power down
  4. Press “RESET” button again, check if the indicator light turns red again –
    Spa/control unit will run again

Wiring checks are the first step to ensure safety and proper function before beginning service on a unit. If in doubt contact a qualified electrician

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