All Ariston error codes
Ariston heat pumps don’t use the codes often found online for this brand. Here’s how to read what your unit displays, and how to get its exact meaning.
Your Ariston code isn’t in the list?
Describe your issue to Cody. He identifies the code, tells you what’s happening, and what you can check yourself. If he doesn’t know the code, he looks it up in the manufacturer’s documentation.
How to read your Ariston heat pump codes
Ariston Nimbus heat pumps (Plus, Compact, S Net) display 3-digit codes from the 1xx, 7xx, and 9xx series: for example, 114 for the outdoor sensor, 902 for the flow sensor, 923 for circuit pressure, 924 for communication, or 934 for the hot water tank sensor. The 5xx codes often found online refer to Ariston gas boilers, not heat pumps.
Write down the exact code or message displayed, then give it to Cody : he’ll explain what it means for your model and what you can check.
All Ariston codes published on the site
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Technical information provided for reference, based on manufacturer documentation and field feedback. It does not replace the diagnosis of a qualified professional. Found an error on this page? Report it.