My question stems from a previous question I posted so not sure if I should have kept it there or not, so here it is. It's going to be cold this week, highs in the low 30's and lows in the teens. I've drained the hot water heater and removed drain plug. I opened the three low point drains and used compressed air to try and blow out the lines. From my previous question on another post, It eas suggested that I turn on the water pump to clear out any water. I turned on the water pump switch and opened the faucet in the kitchen, nothing happened, the pump is not coming on. The red light on the switch comes on, but not the water pump. Is there some type of sensor that will not let the water pump come on if there is no water in the system, or is my pump dead? I have a 2008 Tiffin Allegro Open Road
Easiest thing is to access the pump and reverse the +- wires and try running it again, if t has a clog or obstruction, it might work again. Then try putting the wires back and try again. A screen in line filter keeps debris out. If you have a 12 volt tester, see if the wires are hot, it might be a fuse.
I don't believe that they have a low water sensor, just a low pressure sensor. So I'd check the fuse. My pump has one within 12" of the motor, right in the wiring.
z3roadster wrote: I turned on the water pump switch and opened the faucet in the kitchen, nothing happened, the pump is not coming on.
I am confused here. Pumps are pressure driven so if there is no water to build up pressure there will be no flow. When you say the pump is not coming on, have you verified that? Go to the pump and have someone turn it on and see if it's working. If you ran it without any pressure it could have overheated and tripped an internal breaker. It will reset once it sits for awhile...Check it out and let us know...Dennis
Dennis and Debi
Monaco Dynasty Baron 40PFD
Towing a Chevy HHR W/
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I would look at the obvious stuff that could be wrong before you declare the pump DOA.
Time to get out the ol' multimeter and check to see if you have voltage to the pump. If yes, then pump may be done for. If no, then you need to go on a fuse hunt. If you don't have one, now is a great time to ask Santa to go down to Harbor Freight or Sears and pick up an inexpensive one. A necessity for the motorhome owner.
Also listen close to the pump motor to see if you can hear any humming or buzzing. That may indicate that the pump may be seized up. In which case you can take it apart and see if you can rehabilitate it.
Dave
Mary, the world's best wife (1951-2009)
Isabel & Buddy (the Bostons)
2005 Itasca Suncruiser 35A
z3roadster wrote: I turned on the water pump switch and opened the faucet in the kitchen, nothing happened, the pump is not coming on.
I am confused here. Pumps are pressure driven so if there is no water to build up pressure there will be no flow. When you say the pump is not coming on, have you verified that? Go to the pump and have someone turn it on and see if it's working. If you ran it without any pressure it could have overheated and tripped an internal breaker. It will reset once it sits for awhile...Check it out and let us know...Dennis
Slight correction Dennis. The pump is what creates the pressure, the pump is not pressure driven.
Jim and Sally and a Lakeland Terrier named Rufus
Carson City, NV/Surprise,AZ/Florence,OR
2001 Country Coach Affinity, 40'
Towing a 2005 Ford Explorer Sport Trac with a Blue Ox tow bar and using a Brake Buddy.
The pump may be frozen up. Ive had it happen before. Warm it with ( ?) Ive used various things..even a small electric heater in the compartment...and it will pump then. Best to disconnect it totally from the feed line then and let it pump till its dry ( 15-20 seconds and leave it disconnected till spring.
2000 Country Coach Allure; Cummins ISC 330 HP; 71/2 - 8 MPG regardless
2002 Jeep Liberty
I agree with Sully (The one, the only and the all knowing.) I've had a frozen pump, too. Put your hand near the motor and feel for heat. Air may have blown out the lines, but there could be some water still trapped in the pump head itself.
I used a small electric heater on it for about 15 minutes, thawed out and worked fine since.
I got caught by a sudden freeze spell before I had winterized. Another reason to run the pink anti freeze in your lines, that way you know all water has been dispalced.
Best Regards!
Paul D
2007 Winnebago Journey 39K, Cat C7 350 HP
(aka "R SANITY III ")
2003 Honda Element 4WD Toad
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Jim@HiTek
the pump is not pressure driven.
) I've had a frozen pump, too. Put your hand near the motor and feel for heat. Air may have blown out the lines, but there could be some water still trapped in the pump head itself. 
