Frigidaire Range Control Board: Replace Relay
When a single Frigidaire oven element will not turn on, or will not shut off, a relay on the control board has usually failed. Desoldering and replacing that one relay is an advanced, roughly 50-minute repair that saves the cost of a whole board, but it demands real soldering skill.
A Frigidaire range board typically carries 3-5 relays, one each for the bake element, the broil element, the convection element or fan, and sometimes cooktop elements or the door-lock motor. These are standard board-mounted relays you can replace individually rather than swapping the entire board. An element dead in every mode means an open relay, while an element that heats and cannot be turned off (often with an F10 code) means a welded relay.
Before you start#
| Category | What you need |
|---|---|
| Tools | Soldering iron (40W), solder wick, replacement relay matched to spec, multimeter, Phillips screwdriver, needle-nose pliers |
| Parts | Relay matching the voltage rating, contact rating, and pin configuration (varies) |
| Time and level | About 50 minutes, Advanced |
Safety warning: Disconnect at breaker (240V). Relay contacts may carry line voltage. The control board should be completely de-energized before handling. Capacitors on the board may hold residual charge.
Do You Have the Right Tools?
Combustion analyzer ($300), igniter tester ($120), temperature calibrator ($150), and gas pressure manometer. Our technician arrives with $3,000+ in professional tools — your diagnostic is free.
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Step-by-step#
1 - Diagnose the relay. The relay that controls the misbehaving element is your target: an element dead in its mode means open contacts, while one stuck on means welded contacts. With the board out and unpowered, a good relay reads open on its normally-open pins and closed on its normally-closed pins.
2 - Remove the control board. Take off the backguard or front-panel screws, label and disconnect every harness, and lift the board out. Set it component-side up on an anti-static surface.
3 - Identify the failed relay. Relays are the larger rectangular blocks, often blue, black, or white, with their specs printed on top: a coil voltage of 12V or 24V DC, a contact rating around 20-30A at 240VAC for element relays, and a pin count. Trace the board from the element connector to find which one drives the failed element.
4 - Desolder it. Relays typically have 5-8 pins. Heat each pin from the solder side while drawing the solder away with wick, working around all pins several times until the joints flow freely and the relay lifts out. Forcing it while pins are still soldered tears the pads.
5 - Clear the mounting holes. Reheat each hole with wick until it is open enough to accept the new pins without force. If a pad lifted during desoldering, stop and assess, because a lifted pad turns this into a jumper-wire repair.
6 - Install the new relay. Confirm it matches the original pin count, spacing, coil voltage, and contact rating (equal or higher current). Seat it flush from the component side, solder full joints from the bottom, and inspect for solder bridges between adjacent pins.
7 - Reinstall and test safely. Remount the board and reconnect the harnesses. Before full testing, set Bake to 350F and confirm only the bake element powers, then set Broil and confirm only the broil element powers. If an element will not turn off when you switch to OFF, kill the breaker at once.
Relay specifications#
| Parameter | Bake/Broil relay | Convection relay | Lock-motor relay |
|---|---|---|---|
| Coil voltage | 12V or 24V DC | 12V or 24V DC | 12V DC |
| Contact rating | 20-30A at 240VAC | 10-15A at 240VAC | 5A at 120VAC |
| Common part | T92 or equivalent | T73 or equivalent | T73 or equivalent |
Safety First — Know the Risks
Gas ovens involve live gas lines — a loose connection creates explosion and carbon monoxide risk. Electric ovens run on 240V circuits. Our techs are licensed and insured — let them handle the risk.
Licensed & Insured · 90-Day Warranty · Same-Day Service
Why relays fail#
Every time an element cycles, an arc forms at the relay contacts, and the bake element draws 10-12A at 240V. Over thousands of cycles those arcs either erode the contacts until they cannot connect (open failure) or melt them together (welded failure), with welded failure more common on the high-current relays.
When to call a professional#
EasyBear technicians serving Sacramento and the Bay Area carry Frigidaire-specific diagnostic tools and replacement parts on every service call.
- A board pad lifted during desoldering and needs trace repair.
- Several relays show damage together, hinting at a surge event.
- You cannot confirm the correct relay specifications for your board.
The Real Cost of DIY
Average DIY attempt: $150-400 in tools you may use once, plus the risk of further damage. Our diagnostic visit costs $0 — we find the problem and give you an honest quote.
Licensed & Insured · 90-Day Warranty · Same-Day Service
Appliance Repair Technician · 8 years experience
Experienced technician with 8 years specializing in dishwasher repairs and European appliance brands including Bosch and Thermador.
