IH1 Error in the communication of IACCC device with the AC Unit (IS-RC3-RS485-WIFI-1-V2)


I’ve bought AC cloud control (IS-RC3-RS485-WIFI-1-V2) for my ARG45ALC3 indoor unit which is compatible with the device as per the website. But I receive IH1 Error all the time, I have a wired thermostat, the DIP switch was 0100 and it did not work. Then I removed the thermostat and changed the DIP switch to 1100 and it still did not work. Then I’ve tried many other variations and it did not work. Can you please support.


One more thing, whenever I change the DIP-SW variation, I cut the power via the Circuit breaker.

Hi @Moosawi,

I would recommend that you open a case by going to https://support.hms-networks.com. I apologize for the delay and answering here. We usually let the local agents answer the cases, but since no one from your service area had responded, I wanted to give you another option.

Thank you,