Not all transformer faults on the Infinity 32e are created equal, with some being the same on one component but different on another. This model uses two transformers, and getting the right one from the start is crucial. You want that transformer to be correct from the moment you place your order.
The P70EV-720 is Transformer (B) - the second unit in the Infinity 32e's transformer pair. The transformer on this appliance has got a few jobs to do, it supplies several voltage outputs: AC 30–50V, AC 180–220V, and AC 12–18V to the PCB circuits, and when any of those outputs start to drift outside the normal range during a standby test then the transformer is the culprit. Transformer voltages are measured while the appliance is in standby mode - that's a important detail, not while it is actually working - a fact that can make all the difference for accurate bench diagnosis before any parts are ordered.
A faulty transformer means that the circuits it feeds lose their vital voltage supply. Depending on which outputs are affected the symptoms can range from a complete failure of the appliance, to it switching on and off intermittently, no ignition, or fault codes that point to components that are actually working fine. If you replace the PCB thinking the transformer was the problem you're just throwing good money after bad. Testing those voltage first, and doing it methodically, saves you both time and money.
The P70EV-720 is built to the exact same specification as the original Rinnai Transformer (B) that is fitted in the factory, so it delivers the right voltage outputs, integrates seamlessly with the appliance's existing wiring, and gets full electrical function back to the circuits it serves. All work must be carried out by a Gas Safe registered engineer - that's the law.
The Infinity 32e has two transformers - they are different components with different part numbers. Transformer voltage outputs need to be tested in standby mode, not when it's operational, and both transformers need to be tested methodically before any parts are ordered. Check you have identified the correct transformer (in this case B) as the fault before placing your order. If you need help testing and differentiating between the two units, our technical team is here to assist.
Order before 3pm for same-day dispatch. Get the genuine Rinnai Infinity 32e Transformer (B) on its way to you today.
If you are unsure whether this is Transformer A or Transformer B for your fault? Give us a call before you order - we can help you sort out the right part.
| Brand | Rinnai |
|---|---|
| Part Number | P70EV-720 |
| Product Type | Transformer (B) – Secondary Transformer |
| Compatible Model | Rinnai Infinity 32e (REU-V3232W) |
| Voltage Outputs (Standby) | AC 12–18V / AC 30–50V / AC 180–220V (to PCB circuits) |
| Function | Supplies low AC voltages to PCB and appliance control circuits |
| Appliance Type | Continuous Flow Gas Water Heater |
| Part Type | Genuine OEM Replacement |
| Note | Infinity 32e uses two transformers — confirm Transformer (B) / P70EV-720 before ordering |
| Installation | Gas Safe registered engineer required |
