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Samurai Appliance Repair Man's Blog

Troubleshooting a Dacor PCD / PCS double oven with an F1 error code

Posted by Samurai Appliance Repair Man, in Oven-Range-Stove Repair 13 April 2011 · 1,962 views

F1 Alarm “System Watchdog Circuit”
ERC Self-Diagnostic circuitry has detected a failure in the bake/broil system.
Any portion of the ERC, relay board, touch pad, heating elements and related wiring may be at fault.

How to diagnose/repair potential cause:
Step 1: Disconnect membrane from ERC.
If an F1 alarm is not activated within 30 seconds, check membrane function test points with an OHM meter.
(refer to page 20 of the Diagnostic Test Manual)
If the membrane test switch fails, replace membrane.
If membrane test is good, continue to step 2.

Step 2: At ERC check for 24 VDC between J2 pins 1 and 3 for upper/single ovens or J5 pins 7 and 10 for lower ovens
(when lower oven is not in a cooking/clean mode)
**Note: F1 must be showing in the ERC/Clock Display.
If you read 24 VDC at those test points, replace ERC

The following Dacor PCS/PCD manuals are available to Apprentices upon request:

DACOR PCS PCD Diagnostic_Manual.pdf
DACOR PCS PCD Fault Codes.pdf
DACOR PCS PCD Light-Latch Service Bulletin.pdf
DACOR PCS PCD PARTS 5995436283.pdf
DACOR PCS PCD Service Bulletins ECS_FSB.pdf
DACOR PCS PCD Wiring Diagrams.pdf
DACOR Wall Ovens Quick Tests.pdf

Find and order Dacor oven parts here.

Source: PCD 230R Dacor double oven F-1 code

What you just said...

Posted by Samurai Appliance Repair Man, in Humor 12 April 2011 · 460 views

... and may God have mercy on your soul.

Putting a Samsung refrigerator into forced defrost mode

Posted by Samurai Appliance Repair Man, in Refrigerator Repair 11 April 2011 · 5,449 views

If you're troubleshooting a defrosting problem with your Samsung refrigerator, one of the first things you'll want to do is manually put it into defrost mode so you can use your meter and see if the control board is sending 120vac to the defrost heater. Here's the procedure that'll work for most current Samsung refrigerator models:

Posted Image
(click for larger view)

Troubleshooting a Maytag Bravo electric dryer with no heat

Posted by Samurai Appliance Repair Man, in Dryer Repair 11 April 2011 · 1,529 views

When troubleshooting electrical problems with appliance, like no-heat complaints in dryers, you absotootly gotta have the wiring diagram / tech sheet that comes packaged with the appliance. The manufacturers cleverly hide these inside the appliance to keep owners from finding them and losing them. I love when I go out on a job and need the tech sheet but it's been removed from the appliance. The customer then informs that they took it and filed it so it wouldn't "get lost" but they can't find it. Folks, that's a show-stopper. You cannot troubleshoot electrical problems, except for the most simple and obvious ones, without the tech sheet. Just ain't gonna happen.

Strip charts are nice because they focus only on the circuit and components involved with the specific complaint; in this case, no heat. Let's take a look at the heater strip chart on this beast:

Posted Image

I've highlighted the key components in the hearing circuit that should be checked. You can start with resistance checks if you like. Note the thermistor resistances are given.

But being as how I am an experienced appliance warrior, I like to do live tests with the voltage on the circuit.

This is especially easy in this case. Just disconnect the two common wires from both heater relays (violet and red wires), secure the wires so they don't touch anything and then run the dryer on a heat cycle. In a properly functioning hearing circuit, you'll have 120vas at both the NO (black) and the violet and red wires that were disconnected from the heater relay. Whichever side is missing the 120vac is the problem side.

Can also disconnect the common wire from the heating element, secure it, and run the dryer. See with side of the heating element circuit isn't giving you 120vac: either the control side or the motor side. Whichever is missing the 120vac is the side with the problem.

Source: Maytag Bravo MED6400TB0 electric dryer no heating

Decoding Bosch Dishwasher Error Codes

Posted by Samurai Appliance Repair Man, in Dishwasher Repair 10 April 2011 · 2,366 views

from the Bosch Service Manual:
DISHWASHER TEST PROGRAM ERROR CODES (on 2-digit digital displays):
0 – No faults
1 – Aqua Sensor (Sensotronic) fault
2 – Heating system fault (heater, Hi-Limit, flow switch, NTC, control module heater relay)
4 – Water filling fault
8 – NTC (temperature sensor) fault
16 – Water switch fault

Fault codes add up for multiple faults
(e.g. heating + water filling fault = 2 + 4 = 6)

I'm not a Bosch master, but it looks like 21 would be 16+4+1
Is there enough water in the Dishwasher ?

Source: Bosch SHX56B02UC Dishwasher

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