Honeywell V4073A 5 wire/6 wire

[thimblehouse]

My heating system gave up and only had hot water side working. When the heating called nothing happened. I was advised probably the 3 way valve. Looked at it a V4073A so off I went and got one. Except the new one has 5 wires the old one has 6 which I understand feeds a relay on the side.
The instructions say contact Honeywell have tried but they are on holiday.
So do I fit the new one and ignore the 6th wire a brown or what?

 

[Tipper]

My recollection is that the instruction leaflet tells you what to do?

Could try their website support pages?

 

[londonboy]

What colours were on the old one and what colours on the new 3port?

 

[thimblehouse]

My recollection is that the instruction leaflet tells you what to do?

Could try their website support pages?

The instruction leaflet says contact Honeywell if you have 6 wires.
The UK web site is down

 

[thimblehouse]

What colours were on the old one and what colours on the new 3port?

Old one, White, Brown, Green, Red, Blue, Grey
New one White, Green, Red, Blue, Grey

So the different one is the Brown

 

[wetshoes]

some older valves used relays and had 6 wires - your old one could have been one of these.

To wire up the newer 5 wire type, you might be better speaking to Honeywell for advice, as depending how your system is wired you might have to run a hw off wire from the programmer and swap some wires over on the cylinder stat.

regards.

 

[thimblehouse]

some older valves used relays and had 6 wires - your old one could have been one of these.

To wire up the newer 5 wire type, you might be better speaking to Honeywell for advice, as depending how your system is wired you might have to run a hw off wire from the programmer and swap some wires over on the cylinder stat.

regards.

Thanks lets hope they are back to work tomorrow

 

[Tipper]

Hi, just remembered my heating controls textbook!

It says "If replacing with 5-wire disregard the brown wire and change over the wires on the cylinder thermostat common and demand."

Hope that helps.

 

[thimblehouse]

Hi, just remembered my heating controls textbook!

It says "If replacing with 5-wire disregard the brown wire and change over the wires on the cylinder thermostat common and demand."

Hope that helps.

Magic Thankyou

 

[thimblehouse]

Just like to say thankyou worked like a dream. Now have some heat.
Hope the advise is of help to others as well.