Ask Experts Questions for FREE Help !
Ask
    Checko's Avatar
    Checko Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Sep 27, 2014, 01:52 PM
    Circulator Pump not coming on
    When the Taco Valve is open the circulator pump will not come on. It appears there is no juice to the relay when it calls for heat. The pump comes on if I go through the thermostat and disconnect the zone valve completely. It's a brand new zone valve head.
    Checko's Avatar
    Checko Posts: 2, Reputation: 1
    New Member
    		  
    #2

    Sep 27, 2014, 02:05 PM
    Where does the relay on the circulator pump get its 24V to start the circulator pump
    This is a gas hot water baseboard system, using Taco zone valves, taco transformer, and circulator. Thermostat works, new zone valve head, circulator and relay work if I hook it directly to the Thermostat and bypass the zone valve. 24V between 1 and two when thermostat turned up. Goes to 28V when it opens and voltage between 1 and 3 is now 28V.
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
    Ultra Member
    		  
    #3

    Sep 30, 2014, 10:12 AM
    Check the wires between the zone valve & relay. You could have a broken wire.
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
    Ultra Member
    		  
    #4

    Oct 5, 2014, 08:06 PM
    The thermostat needs to activate the pump and the zone valve with parallel circuitry, not series. Did you wire this yourself?
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Circulator pump not kicking on when needed. [ 1 Answers ]

Gas fired hot water baseboard system. 3 thermostat zones. When 1 of the zones calls for heat, the zone valve opens and a 'click' is heard, but does not kick the pump on. If I switch the pump from 'intermitent' to 'constant', water flows, the boiler kicks on and all works fine.

How to check aquastat for circulator pump operation [ 0 Answers ]

Just installed a new taco 007 pump. It does not work. I checked it by using an extension cord and it works fine, Could it be the aquastat? (Honeywell L8124 a,c triple aguastat) Every thing else on the weil mclain burner works fine only the pump does not work. What can I do to check?

Switch on circulator pump [ 7 Answers ]

Is there any problem with me putting a regular toggle light switch on a circulator pump? I want to be able to shut the pump down at will without going up 3 flights to turn the thermostat down.

Circulator pump not spinning [ 2 Answers ]

I have an oil furnace plenty of oil and power to everything, but the circulator will not work. It hums when I turn the t-stat up. I would like to repair it. I cannot afford to replace it today -- and pay emergency service prices.

View more questions Search