I have an indirect hot water cylinder, and a gas bolier. The immersion heater coil was replaced some weeks ago and has been fine since, and everything else has been operating fine for 4 years.
The central heating circuit is fine but I have no hot water.
The boiler fires up fine and all pumps are OK. The pipe entering the cylinder at the top of the heat exchanger gets hot but the pipe from the cylinder at the bottom of the coil stays cold. This bottom exit pipe immediately enters a Honeywell 4043, 2 port, MV. Pushing the valve lever to manual makes no difference and removing the head and manually turning the valve to open makes no difference (checked this positioning against a replacement as the flow line on the installed valve was into the coil).
Any suggestions what to look at next, any additional info needed?
The central heating circuit is fine but I have no hot water.
The boiler fires up fine and all pumps are OK. The pipe entering the cylinder at the top of the heat exchanger gets hot but the pipe from the cylinder at the bottom of the coil stays cold. This bottom exit pipe immediately enters a Honeywell 4043, 2 port, MV. Pushing the valve lever to manual makes no difference and removing the head and manually turning the valve to open makes no difference (checked this positioning against a replacement as the flow line on the installed valve was into the coil).
Any suggestions what to look at next, any additional info needed?