Murphy fault code

[Sanders]

incase you didn't see my other thread on troubleshooting using QuickServe:

https://www.repowerowners.com/forum/...-code-decoding

I don't have time right now to go through the steps for that code but I would definitely double check the wiring for the grid heater relay as a step 1

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I have a fault code 157-18. I followed this guide, but unfortunately that doesn’t show up. Any idea what it might be?