serin labssupport
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Most questions are answered below. If yours is not, send us a message using the form at the bottom of this page.
Frequently asked questions
8 answers
- The unit ignores commands after flashing Usually a half-seated CN105 plug or the wrong baud rate. Troubleshooting
- The board drops off Wi-Fi overnight Check power-saving settings on your access point. Troubleshooting
- Where do I find my model number? On the nameplate sticker inside the indoor unit. Guide
- Why does the temperature read a few degrees high? The internal sensor reads return air. A remote sensor corrects it. FAQ
- Apple Home rejects the pairing code Remove the previous accessory entry, then pair again. Apple Home
- Do multi-zone systems need one board per unit? Yes. Every indoor unit has its own CN105 port. FAQ
- Which cable length fits a ducted unit? The 50 cm cable reaches most ducted control boards. Guide
- Flashing fails in the browser Use a data-capable USB cable with Chrome or Edge. Troubleshooting