There are two layers of overheat protection in the Rinnai Infinity 32e and HD70E - a bi-metal overheat switch which you can reset and the thermal fuse assembly, which can't be reset.
The fusible link is stuck to the heat exchanger & it's the last line of defence - it only cuts off the power supply if the temperature shoots up to 129°C. By the time it blows, something has gone seriously wrong with your appliance - a really bad overheat condition has gone past the bi-metal switch's safety limit and got past temperature that's so hot it trips the thermal fuse and shuts down the heat exchanger and everything else.
The thermal fuses are a one-shot deal - once they're blown, they're done for, and there's no magic fix. You can't reset them, or bypass them, or pretend they never happened. The appliance won't work again until you fit a new thermal fuse assembly. And here's the thing - replacing the fuse without sorting out the root cause of the overheat in the first place isn't going to fix the problem - the same fault will just blow the new fuse too.
The P70EV-714 is a genuine Rinnai thermal fuse assembly for the Infinity 32e & the HD70E - it's the full package & it needs to be installed on the heat exchanger just so, following Rinnai's servicing diagrams to the letter. You'll need to get a Gas Safe registered engineer to sort it out, as they are the only ones allowed to do any fiddling with your boiler.
If your thermal fuse has blown, chances are your appliance got to 129°C at the heat exchanger, and that doesn't happen for no reason. A qualified engineer has to go in and figure out what caused it first. A new thermal fuse won't fix the problem - the same thing will just happen again. Take any overheat seriously and don't just throw a new fuse in without finding the cause.
The thermal fuse needs to be put in the right place, around the heat exchanger in just the right way for this to work properly. A dodgy or wrong-fitting fuse might not make contact with the heat exchanger at all, which rather defeats the object. The genuine P70EV-714 is the only legitimate part you should be fitting into either the 32e or the HD70E. Built to Rinnai's exacting standards, it arrives ready to be installed and gives both the engineer working on it & the end user peace of mind that the heat exchanger protection is fully restored.
You can't skimp on a part like this. It really does pay to fit genuine.
Get your order in before 3pm and we'll dispatch it on the same day - you can have that genuine Rinnai 32e / HD70E thermal fuse assembly on your doorstep today.
Having a code 14 fault show up ? or need a bit of help figuring out which part your model actually needs ? Give our team a call - we'll walk you through it so you get it just right.
| Brand | Rinnai |
|---|---|
| Part Number | P70EV-714 |
| Product Type | Thermal Fuse Assembly (Fusible Link) |
| Compatible Models | Rinnai Infinity 32e (REU-V3232W) & HD70E (REU-VRM3237) |
| Activation Temperature | 129°C |
| Mounting Location | Wrapped around the heat exchanger |
| Function | Permanently cuts electrical power supply if heat exchanger temperature exceeds 129°C |
| Reset Type | One-shot — cannot be reset, must be replaced once activated |
| Part Type | Genuine OEM Replacement Assembly |
| Installation | Gas Safe registered engineer required |
