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3 amp fuse blows on ruud silohette II blower. what should i troubleshoot next. when i replaced with a 3 or 5 they both blow. has a rheem circuit board

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If this is a split system unit look for a short in the stat line weed eater damage! mark all wires on stat wire and un hook if still blows board bad if not short in stat wire hope this helps

Posted on Jun 18, 2009

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Amp keeps blowing fuses


Blowing fuses, was caused by many thing.
Short of rectifier,resistor,elco,tube heater,tube pin, and also trafo itself (primary or secondary winding). It must check step by step.
CAUTION :
THIS IS HIGH VOLTAGE AREA.
RISK OF ELECTRIC SHOCK THAT CAN KILL.
DON'T DO THIS IF YOU ARE NOT TECHNICIAN OR NOT FAMILIAR WITH VACUM TUBE CIRCUIT. THE CIRCUIT MAY STILL CONTAINS ELECTRIC SHOCK EVEN IF IF THE AMP IS NOT POWER PLUGGED.


The simple steps (see picture) are:
  1. Disconnect all connection from secondary of power trafo (PLV,PDCH,PACH and PHV).
    Power ON the amp. If fuse is not blowing,trafo is good.
  2. Power OFF the amp. Unplug the cord.
    Connect PLV1-PLV2-PLV3 (this are Bias voltage,+/-15VDC and Backlight PCB voltage) to power trafo.Power ON the amp. If fuse is not blowing,PLV circuit is good.If fuse blowing,there are parts is damage (dioda,elco,7815/7915,resistor) in this PLV circuit.
  3. If step 2 is good,go to next step.
    Power OFF the amp. Unplug the cord.
    With PLV circuit stay connected,connect PDCH 1-2 and PACH 1-2 to power trafo. Power ON the amp.
    If fuse is not blowing,PDCH and PACH circuit is good and all tubes heater/filaments are lights after a few seconds.
    If fuse blowing,there are parts is damage (dioda,elco,tube heater pins) in this PDCH/PACH circuit.
  4. If step 3 is good,go to next step.
    Power OFF the amp. Unplug the cord.
    With PLV,PDCH,PACH circuit stay connected,connect PHV 1-2 to power trafo.
    Power ON the amp. CAUTION: HIGH VOLTAGE AREA is ON.
    If fuse is not blowing,PHV circuit is good.
    If fuse blowing,there are parts is damage (dioda,elco,tube pins) in this PHV circuit.
.amp-keeps-blowing-fuses-01sk4vtrndbaaguwe2brflsj-5-0.jpg
Notes:
  • Steps had to be done sequentially from 1 to 4, not upside down.
  • If tube/heater pin is short,it can't be repair. The tube must be replacing.
  • PDCH circuit is voltage for V1-2-3-4 heater/filaments.
  • PACH circuit is voltage for V5-6-7 heater/filaments.
  • Always replace fuse with same type.

amp-keeps-blowing-fuses-01sk4vtrndbaaguwe2brflsj-5-1.jpg

Oct 02, 2015 | Peavey 6505 Plus 120W Guitar Amp Head

1 Answer

Blowing fuses on rheem rtgh 84dv


Call service technician
Check polarity of 120 volt outlet
Call Rheem for new PC board
If the 3A glass fuse located on PC board is blowing, then something is drawing too much current or shorted on board... problem is probably bad PC board
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Gene

Oct 12, 2014 | Rheem RTGH-84DVN Indoor Direct Vent...

1 Answer

Rheem rgua-080c blower motor not blowing strong


just asking, Is the direction of rotation correct?Or is fresh air open? Fan cage on tight?Is the fan getting the power it needsto reach and maintain proper RPM (SPEED). chk the fan switch. Some have resisters incorated to control speedilica





_

Jul 18, 2014 | Ruud Rheem Squirrel Cage Blower Wheel...

1 Answer

Blows Fuse


check for breaks in the thermostat wiring.

Jun 01, 2014 | Ruud Heating & Cooling

1 Answer

Ruud 90 plus will not blow hot air


My Ruud is a different model, so this may not work. Remove the cover to the burners. Look on the left side for a small rubber hose going to a metal cylinder. Remove the hose and blow through it to remove any moisture. Replace the hose and see if the burners start up.

Feb 23, 2013 | Ruud Rheem Rgfe09ezcms Gas Furnace

1 Answer

1992 gmc pickup keeps blowing heater fuses I replaced the blow motor and it keeps blowing


Have you replaced the blower resistor . some times they can cause the fuse to blow . You may need a muiltmeter to test the current draw on the blower motor circuit. the draw should be less then half of the rated fuse .( 20 amp fues draw is less then 10 amps) You did not say but does the blower work on high only or the lower speeds with out blowing the fuse ? if it does work on low or high with out blowing the fuse i would replace the blower resistor

Mar 06, 2011 | GMC Sierra 1500 Cars & Trucks

1 Answer

When i tunn on my AC unit at the thermostat it blows the 3 amp fuse in the air handler when it call for cool when i switch the t stat to off and just turn fan on the fuse does not blow and blower runs


sounds like the compressor is or a electrical component directly linked with the cooling operation/ outdoor unit running.
Possible short to earth....

cheers

Jul 05, 2010 | Ruud UBHC Air Conditioner

1 Answer

Blowing 20 amp fuse


Hi that fuse should be a 25 amp and it runs the blower, heater, the day time running lamps, automatic light control and the rear defogger you would have to check each unit at a time what I would do is put a hire fuse and look for smoke on the wiring as soon as iI see whats burning I take the fuse off but you have to be quick and pull out the fuse before any thing burns if not check each unit mention and look for good luck.

Aug 17, 2009 | 1997 Pontiac Grand Am

1 Answer

3 amp fuse blows on ruud silohette II. With A/C off blower runs on manual OK With Heat on, gas heater runs OK, blower OK on Auto Disconnected relay wires at condenser and turned A/C on. Ran for a...


this sounds like an issue with the control wiring, there could be wires shorted togeher either at the thermostat, or in the wall, you need to isolate the wires at both ends then check for continuity with an ohmmeter there should be none) to verify which wires are shorted

Jul 19, 2009 | Heating & Cooling

1 Answer

My central air fan isn't blowing. The thermostat


Check the master circuit breaker at the power panel? Should be 2 50 amp vreakers. Turn them off rgen back on.

Jun 08, 2009 | Ruud UBHC Air Conditioner

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