⚠️ SAFETY FIRST: READ BEFORE STARTING
Working on electric showers is dangerous. You are dealing with a high-voltage appliance (240V) and water.
ISOLATE POWER: Always turn off the electricity at the main consumer unit (fuse box) and pull the isolation cord before removing the shower cover.
VERIFY DEAD: Use a voltage tester to ensure no power is reaching the unit.
LEGALS: In the UK, major electrical work in bathrooms is "Part P" regulated. If you are not a competent person or are unsure of these tests, stop and consult a Part P qualified electrician.
DISCLAIMER: You follow these guides at your own risk. This site and its authors are not liable for any injury, loss, or damage caused by your repairs.
On this post we test the Triton avena electric and see what is wrong with it , test the solenoid to see if it has around 3.7 ohms and then test micro switches the heater element and the thermal cut out. The last video is a tear down of the machine.
Triton Avena Component Testing:
Heating Elements: You should see a resistance of between 11 ohms and 15 ohms on each individual element. If you test them together in parallel (at the top of the tank), a healthy 9.5kW unit will read approximately 6 ohms to 7 ohms.
Solenoid Valve: The coil should read between 3.4 kOhms and 4 kOhms. If the multimeter shows "OL" (Open Loop) or 0 ohms, the coil is dead and the water will not flow.
Thermal Cut-Out (TCO): This must show continuity (0 ohms). If it has tripped due to an overheat, it will show as an open circuit.
See video below of the testing for faulty components on the electric shower below.
See below video for the tear down of the Triton Avena
A common 'hidden' fault on the Avena is the thin ribbon cable connecting the start/stop button on the front cover to the internal PCB. If you've recently had the cover off and the shower is now 'dead', check that this cable is pushed firmly into its socket. A loose connection here is often mistaken for a failed solenoid.
Triton parts
Buy these PRD from Ebay UK here
Buy main seals on Ebay UK here
Buy triton solenoids on Ebay UK here
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