Question about Parallax Power Supply Parallax 7400 Series 65 Amp Electric Charger/Converter

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Circuit diagram parallax converter for rv trailer 120 ac /12v dc

Thermister value in ac circuit before bridge rectifer

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mwredd

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The component vendor for RT1 is US Sensor Corp, part # ST2R018B.

Posted on Oct 14, 2014

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Parallax 4455 may not be charging my batteries. How do I test it?


connect a multi meter across the battery terminals and set on volts dc there should be 14.5 volts across the posts when the charger is on check for the dc notice on the dial as if the rectifiers in the charger have failed , you will get an ac voltage and that will not charge a battery

Aug 11, 2018 | RVs

2 Answers

Wiring diagram for a 1988 sunline travel trailer.some of the light switches and outlets have no power going to them.what could be the problem?


Your trailer has two electrical systems, 12v and 120v. The 12v system has a battery and perhaps a converter/charger to power it. The 120v system must he hooked up to 'shore power.' Both systems have their own protection. The 12v system has a fuse panel, check for power at each fuse. 12v wall switches are often smaller and don't look like typical 120v switches like in a house.

The 120v system has a breaker box and circuit breakers. Reset each breaker by turning off then on again. In addition, the 120v outlets might have a GCFI outlet near a sink. It often is wired first in a breaker circuit, thus giving GCFI protection to other outlets in the circuit. Test the GCFI and make sure it clicks off and can be reset.

May 01, 2017 | RVs

3 Answers

Outlets not working all fuses are good


120-
VOLT
AC
SYSTEM
The following electrical components (if so equipped) will only operate when your
RV is connected to shore power: 120 to
12-volt power converter, air conditioner,
120-volt refrigerator, microwave oven, television(s), fireplace and appliances
plugged into convenience receptacles.

SECTION 6 - ELECTRICAL SYSTEM JAYCO TOWABLE
6-2
120-
VOLT
CIRCUIT
BREAKERS
The 120-volt AC circuit breakers located in
side the main load center protect all
120-volt wiring and components in the RV fr
om circuit overloads and short circuits.
Should a circuit overload or short circui
t occur the circuit breaker protecting the
affected circuit will "trip" preventing the flow of electricity through that circuit.
If a circuit breaker trips, shut "off"
the appliance on that circuit (i.e., power
converter etc.) and allow the circuit breaker to cool down for a brief period of time.
After the cooling down period, reset the circuit breaker by moving its lever "off" and
then back to the "on" position. If the circuit breaker re-trips or frequently trips,
contact your dealer to have the electrical problem diagnosed and repaired.
A circuit breaker identification label is permanently attached to the inside surface
of the 120-volt load center.
Maintenance and Replacement
At the beginning of camping season, inspect the circuit breakers and replace as
needed. Test by turning each circuit breaker "off" and back "on". Circuit breakers
are wearable parts and must be replaced
as needed, as part of your RV
maintenance. If you have any questions, consult your dealer.
Please contact your dealer for repair assistance when replacing circuit breakers.
CONVERTER
The power converter converts 120-volt AC power to useable 12-volt DC power
when the shore power cord is connected to an external power source.
The converter has a built-in protective thermal breaker that will shut it down should
overheating occur. Overheating can be
caused by operating the converter above
its maximum power output for an extended period of time, or by an obstruction to
its ventilation air flow. To reduce converter heat build keep unnecessary 12-volt
lights and motors turned "off"
.
Keep the converter cooling fins and fan clear of
obstructions.
Inspection and maintenance
If the 12-volt power converter is not working (auxiliary battery not being charged)
check the reverse polarity fuse(s) in the converter fuse panel.
There are no
customer serviceable parts inside the converter case and the
manufacturer's warranty will be void if
the case has been removed
. If you
have further concerns contact your dealer.

Nov 16, 2014 | Jayco 2013 Jay Flight Swift 264BH

1 Answer

What is the thermister


Hi,

A thermistor reports to a board a resistance value, this does not turn on components nor have any other function other than report a value. I hope this helps

I’m happy to help further over the phone at https://www.6ya.com/expert/gere_bf68e6055dd61249

Aug 01, 2014 | Dometic 3851210025 Refrigerator Part...

1 Answer

It does not seem to be charging the batteries. 12 volt lights work good for about 2 days then go dim until I put a charger on the batteries and bring them back into working order. The battery connect...


The Parallax 7155 converter should not require battery support for any 12 volt load amperage that is less than the maximum amperage capacity of the converter. A standard RV incandescent 12 volt lamp draws about 1.5 amperes for each bulb. With the battery disconnected and other 12 volt loads off, turn on lamps (not fixtures) and calculate the number of bulbs which can be turned on. If you run out of lamps, turn on vent fans etc. The idea here is to try to get to 55 amperes of DC load if possible without going over 55 amperes. At a sustained DC load of about 25-30 amperes or higher, the fans should cycle on continuously after about 5 -10 minutes. Lamp brightness should be normal and the measured voltage from the converter should be above 13 volts if under 55 amps of DC load. If the voltage drops with only a few lamps on, a converter issue would be likely.

Diagnostic tests an RV technician should make would be to:
1. Disconnect the battery system.
2. With the converter system powered on, measure the DC amperage with a DC ammeter capable of reading at least 60 amperes DC from the blue lead at the DC fuse panel terminal VCC.
3. Measure the DC voltage at terminal VCC and DC ground.
4. Record both readings.
At any DC load amperage less than 55 amps, the voltage should be above 13.0-13.2 volts DC. This method should take out all guesswork and confirm a DC converter section issue or not.

Nov 04, 2013 | Parallax Power Supply Parallax 7100 Series...

1 Answer

SW4P Pilot Water Heater 3 Gallon Trailer Camper RV


These systems use "flame rectification" to sense or prove a flame or pilot flame exists thus it is safe to continue or transition to main burners if a system with a pilot light.
The AC spark is rectified to a DC signal by the flame as the AC current passes through the flame, the flame being a poor conductor only a small amount of DC signal is sent, in the milliamps, so it is not too difficult to interrupt the signal and disrupt the operation, it is doing this for safety.
What you can do is clean the surfaces where the pilot assembly meets the casing and burnish this path clean back to the ignition modules ground or burner ground terminal, there may be a flame sensor too, in this case clean it with 0000 steel wool it is just a ground rod and does not wear out but will build a film that can disrupt the weak DC signal.

Nov 04, 2013 | Suburban SW4P Pilot Water Heater 3 Gallon...

1 Answer

Wavy horizontal lines across the screen


It sounds that the main power supply section to your TV has the fault. The horizontal thik lines that appears crawling down across the screen should be of video 'HUM'. Have you replaced the main filter capacitor at the power supply section? If not, replace it along with the main rectifier. The AC power is rectifed by a bridge and applied ot this main filter capcitor. It will have a capacitance value between 120 to 350MFD 450VDC. Check this section. Measure the rectifed DC voltage acorss this main filter capacitor. It should be around 350VDC, if your home power supply line is 220VAC. If it is 110AC, this DC voltage will be around 165VDC; and it should be. If rectified DC voltage found lower than the input AC voltage, replace the rectifier bridge. In some sets, this bridge section have four diodes. Some other circuits, a bridge rectifier stalk may be used.

May 20, 2012 | JVC AV-27050 TV

1 Answer

I have a coleman powermate 6250 generator with a 4prong 220v female plug on the power panel. My travel trailer has a 3 prong male plug. How can I convert my generator or is there an adapter that I can...


You do not want to convert anything to a 220 v connection !!!! Your RV is 12 volt DC and 120 volt AC.
Use a 30amp female to 15 amp male adapter to plug in to regular household receptacle on generator. Available at hardware store and RV stores.

Apr 27, 2011 | Coleman Powermate Premium Plus 6250W...

1 Answer

Hi, sounds like you understand power converters. I have a 96 Hitchhiker fifth wheel with a 40 amp magnatex converter with bat. chager. The problem I have is that is does not charge the battery with the...


It sounds like you may have some wiring issues. The inverter simply changes DC battery voltage to 120 volts AC. This will allow you to have AC voltage without running a generator.(noise issue).You probably need to find a well recommended RV repair shop and have a tech look things over.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

Jun 20, 2009 | Electronics - Others

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