juergen_schwarz4
Zoe AC Undervoltage
Summary of the thread
A 2017 Renault Zoe experienced an air conditioning failure, with the system not activating or cooling, and an error indicating undervoltage. This issue could potentially cause the A/C compressor to shut off. Possible causes include a faulty pressure sensor, low refrigerant level, or a malfunctioning AC relay. The recommended solution was to consult a qualified workshop, which identified a faulty connection as the cause, resolving the issue and restoring the A/C functionality.
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4 comment(s)
juergen_schwarz4 (community.author)
Thanks for the quick reply. I haven't checked the pressure sensor, refrigerant level, or AC relay. Where is the pressure sensor located, and is it easy to test the relay switch? I'm not a mechanic, but I can follow instructions.
piakoehler7
Diagnosing undervoltage and A/C systems often requires specialized equipment. Given the potential complexity and the stored error, I strongly recommend consulting a qualified workshop. You could damage the A/C system further if you're inexperienced.
juergen_schwarz4 (community.author)
Thanks for the advice. I took it to a workshop as you suggested. There was undervoltage, and they found a faulty connection. Repair cost 240€, and now the A/C is working like new.
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RENAULT
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ZOE
piakoehler7
It's certainly plausible that undervoltage could cause the A/C compressor to stop. Have you checked the pressure sensor and refrigerant level? A leak could trigger such a fault. Also, has the AC relay been tested?