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- 27 Sep 2020
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Hi all good people
I have bought a wireless room thermostat, ESI model ESRT4RF to upgrade my old DRAYTON RST1. From my ICOS, ancient boiler, I have four wires, one live wire, one netral, one 'earth' and another wire that connects on the '3' terminal of the DRAYTON thermostat, first picture. Upon testing with my multimeter the '3' wire acts like a neutral.
I fitted the new one in and the boiler don't turn on for heating but when I plugged the old one in it is working. Any help please ?
I have bought a wireless room thermostat, ESI model ESRT4RF to upgrade my old DRAYTON RST1. From my ICOS, ancient boiler, I have four wires, one live wire, one netral, one 'earth' and another wire that connects on the '3' terminal of the DRAYTON thermostat, first picture. Upon testing with my multimeter the '3' wire acts like a neutral.
I fitted the new one in and the boiler don't turn on for heating but when I plugged the old one in it is working. Any help please ?