Skip to main content ↑ ↓
Topic: Mystery switch on front of bed box ,on89 unihome grand villa? (Read 660 times) previous topic - next topic

Mystery switch on front of bed box ,on89 unihome grand villa?

On a 1989 36 ft unihome grand villa what is the function of the switch bellow the 12 volt panel on the front of the bed frame?cant find out the function in any of the manuals .
Thanks
Sandy

Re: Mystery switch on front of bed box ,on89 unihome grand villa?

Reply #1 –
High probability it is used to control the 110V AC power going to the engine block heater.

On our '93 U280, the switch, when turned on, sends power to a duplex 110V outlet in the engine compartment.  The engine block heater is plugged into the outlet.  When our switch is "ON" it lights up red.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Mystery switch on front of bed box ,on89 unihome grand villa?

Reply #2 –
Good idea to turn it on and then feel in the area of the block heater installation to see if it's warm after a few minutes. You could also have someone watch the voltmeter above the entrance as the block heater is turned on. There will be a voltage drop if the block heater is working.  Remember to turn the block heater off before using the starter motor as any air bubble may burn the electrode out.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Mystery switch on front of bed box ,on89 unihome grand villa?

Reply #3 –
Turn the switch on. It will light up--red.
Go to your 120V panel and look for breaker #8 I believe. Flip it off. If the correct one for the block heater the lighted switch will turn off.
Nitehawk,  Demolition Lady, & our NEW master, Zippy the speeding BB cat.
1989 Grand Villa 36' ORED
Oshkosh chassis, 8.2 DD V8
2006 Saturn Vue AWD

Re: Mystery switch on front of bed box ,on89 unihome grand villa?

Reply #4 –
It may be the switch for the bedroom furnace.
88 Grand Villa 36' ORED 3208 (throwaway)Cat.
 Build # 3150
Happiness is the maximum agreement of reality and desire.

Re: Mystery switch on front of bed box ,on89 unihome grand villa?

Reply #5 –
Quote from: zonecone –
On a 1989 36 ft unihome grand villa what is the function of the switch bellow the 12 volt panel on the front of the bed frame?cant find out the function in any of the manuals .
Thanks
Sandy

If you post a photo, we can answer 100%
P
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Mystery switch on front of bed box ,on89 unihome grand villa?

Reply #6 –
Did you look under the raised bed at the back side of your switch to learn what it is wired to?

Every coach from the factory can be different and over the years coaches with several owners often have lots of custom added switches, so it may be up to you to show the group what you are talking about.  And you may have to dig a little deeper. 

Re: Mystery switch on front of bed box ,on89 unihome grand villa?

Reply #7 –
I have two of those switches one for the block heater and the other is for the hot water heater
Toby a 94 u280
Cummins 8.3
6 speed Allison
Exhaust brake


Adopted by Derek and Annabelle

Re: Mystery switch on front of bed box ,on89 unihome grand villa?

Reply #8 –
Make sure if it is the hot water electric heater that the hot water tank is full of water. If the heating rod inside the tank is not surrounded by water it will burn out quickly.
1995 U320C SE 40'
Jeep 4x4 Commander - Limited - Hemi
"The Pack"  Yogi and Diesel our Airedales -  Charlie our Boxer/Akita mix. Gone but NEVER forgotten Jake our yellow Lab.
NRA Law Enforcement Firearms instructor - Handgun/shotgun
Regional Firearms instructor for national Armored Transp. Co.

Re: Mystery switch on front of bed box ,on89 unihome grand villa?

Reply #9 –
I replaced the cover on my mistrust switch
Chris
1999 U 320 DGFE
Build Number 5523
Chris & Elka Lang
In the field, Lonoke AR
 

Re: Mystery switch on front of bed box ,on89 unihome grand villa?

Reply #10 –
Also when in storage keep the breaker off especially with smaller supply.
Toby a 94 u280
Cummins 8.3
6 speed Allison
Exhaust brake


Adopted by Derek and Annabelle