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Ah yes, there are timers on the front of the boiler (file attached), I have seen photos with similar boilers that have blanking plates where the timers usually are, so maybe it's optional? As for 3 & 4, I've them wired into the dotted circle on the top right, as you mentioned (connection to...

Thanks for that @stem - I'll check this evening. The physical controls on the boiler are still working for both heating and hot water, so the relays and pumps are operational, I've a multimeter too if need be. I'll put in the thermostat bypass / link and remove the old room thermostat as soon...

Just went over the wiring again to make sure all was in the right place and try some more troubleshooting. I can control hot water if I just have the wire in slot 4 (connected to h.w. timer switch live on the boiler); if I connect the central heating control wire into slot 5 (connected to c.h...

Initially on the wiser connection side I had: N = neutral from boiler L = live from boiler 1 = none 2 = none 3 = h/w timer switch live 4 = c/h timer switch live The 3 and 4 connections were labelled in the firebird manual as external two gang timer, I thought it was looking too easy :LOL: I...

Hi all, I have a Firebird Combi 90 oil boiler that supplies heat and hot water via separate controls on the front of the boiler. There is also a single thermostat in the hall to control the central heating temperature. I don't want to keep the hall thermostat, as the Wiser kit has a wireless...