Strange Problem!!!

[sansouci2]

I am asking for help again for a strange problem. We own a 2003 40 foot
Monaco Executive with three slides. The other day we had snow, so we put the slides in. The next morning I put out one slide, and turned on the faucet, to make sure the water flowed freely. No water--water pump not working. Went to put out second slide--not working. The backup camera didn't work, the TV (which retracts into the ceiling when not in use) would not open up, and the gauges to show water level in the tanks--none of these worked. Checked the circuit breakers--all ok. Unplugged the 50 amp shore power and lights work fine, still have initial problem. Reset all breakers and everything works. Checked water pump and initial problem recurred. Reset breakers and problem still there, unplugged shore power and problem SOLVED. Elected NOT to try water pump again!!! Anyone know what the water pump has to do with the slides, backup camera ect.

Please help. The wife

[D_E_Bishop]

If you turn on shore power, what happens? Does everything work but the water pump?

With shore power on, the converter is supplying the 12 VDC and the batteries are basically just redundancy. So for now skip checking the specific gravity and all that and reconnect the shore line. Does the pump have 12 VDC? If it does then the pump is most likely bad. If there is no power to the pump, then you need to determine where the fuse or circuit breaker is and check for power on both sides of the fuse or CB.

If this doesn't make sense to you, I would suggest a mobile tech. If you're in a campground, ask for a recommendation from the desk clerk. If you are at home check Google or the Yellow Pages for one.

Extreme heat or cold can cause strange things to happen to electrical devices. Extreme cold can freeze water, could your pump be frozen? Is the pressure sensing switch on the motor bad? There are a lot of variables and that is where experience comes into play. If you don't have it call the moble tech.

[SageCrispin]

First step is ALWAYS inspect, clean, reattach battery connections. Check each battery individually with a DMM while they are disconnected. Better still, use a hygrometer for each cell. More likely an install issue than a bad battery but at this point everything is still on the table. I don't remember what the charging voltage should be, but I think it should be higher than 6.2 when it is actively charging a nearly full bank. Continue to gather data and report back.

[sansouci2]

Just checked with Monaco, house batteries should be 4 6 volt batteries.

[sansouci2]

These are 6 volt batteries. should they be 12 volts?

[MEXICOWANDERER]

Intermittent problem. Let it develop.

[Heisenberg]

Take them back for a check. They should be pro-rated. Sometimes they go bad. It may have been built on Tuesday after a 3 day weekend in the RV.

[sansouci2]

Batteries were new in March. What do you think happened to them?

[2chiefsRus]

sansouci2 wrote:
House batteries test at 6.1-6.2 while shore power is disconnected.
I know if I were to try the water pume again I would have the same problem.
Does anyone know which circiut breaker. if there is one, runs the water pump?

sounds like your batteries are dead.

[sansouci2]

Just reread post and saw that breakers run off 120. There still seems to be a common denominator between the two.

[sansouci2]

House batteries test at 6.1-6.2 while shore power is disconnected.
I know if I were to try the water pume again I would have the same problem.
Does anyone know which circiut breaker. if there is one, runs the water pump?

[Rubber_Ducky1]

If you are connected to shore power when you check the batteries on the display panel then the batteries will just about always show fully charged. disconnect shore power and then check batteries.

[sansouci2]

I will check the batteries but they were all checked two weeks ago. They read good on the display panel in the RV. I thought that also, but when I disconnect shore power the house batteries are doing the lights ETC.

[old_guy]

when was the last time you washed off the tops of your batteries, If they are dirty wash them off with hot water do not use baking soda. also take of the cables and clean them and check the charge in the batteries

[Mandalay_Parr]

The common thread seems to be the 12 volt battery power system.
Loose or dirty connections can cause these problems.