Hi,
I am new here and I did peruse the site to find an answer to my problem..but struck out.
I have radiant in-floor heat with an indirect water heater. Last year Zone 4 quit working and I finally got around to looking at it. I finally figured out the front / removeable ahlf of the thermostat on the wall was not making good contact with the permanently (screwed to the wall) half of the thermostat. I fixed that by spreading the front half pins a little bit further aprat and now the thermostat is calling for heat. the green light is on. However, the red light will not come on. I took a meter downstairs to the Argo AZ-6P zone valve control box and found the following:
@ the switch behind the Honeywell zone valve: 2 red wires: meter on ACV 200 either 0 or 17.5v, depending on which lead is touchign which red wire..
@ the actuator: 2 yellow wires 19.1v or 26.4v depending on which lead touches which yellow wire
just the actuator removed: orange & yellow wires: Ohm 200 on meter: 23.6 or 23.6..no matter which kead touches which wire
with actuator connected to zone valve: orange & yellow wire: 6.7v, again no matter which lead touches the wires
Any thoughts as to why the red light will not come on? I actually had a 2nd Honeywell zone valve and swapped them out: i get the same above readings.
Even putting the switch in the manual position does not allow water to flow thru the pipes in the floor..
Thanks for the help.
I am new here and I did peruse the site to find an answer to my problem..but struck out.
I have radiant in-floor heat with an indirect water heater. Last year Zone 4 quit working and I finally got around to looking at it. I finally figured out the front / removeable ahlf of the thermostat on the wall was not making good contact with the permanently (screwed to the wall) half of the thermostat. I fixed that by spreading the front half pins a little bit further aprat and now the thermostat is calling for heat. the green light is on. However, the red light will not come on. I took a meter downstairs to the Argo AZ-6P zone valve control box and found the following:
@ the switch behind the Honeywell zone valve: 2 red wires: meter on ACV 200 either 0 or 17.5v, depending on which lead is touchign which red wire..
@ the actuator: 2 yellow wires 19.1v or 26.4v depending on which lead touches which yellow wire
just the actuator removed: orange & yellow wires: Ohm 200 on meter: 23.6 or 23.6..no matter which kead touches which wire
with actuator connected to zone valve: orange & yellow wire: 6.7v, again no matter which lead touches the wires
Any thoughts as to why the red light will not come on? I actually had a 2nd Honeywell zone valve and swapped them out: i get the same above readings.
Even putting the switch in the manual position does not allow water to flow thru the pipes in the floor..
Thanks for the help.