The short answer
F42 means the brand points at the cooktop power control board, the board that switches power to the zones, or its wiring. Zones may not heat, or may heat unpredictably; try a breaker reset, and if the code returns, leave the cooktop off until it is repaired.
Error codes
Reference| Code | Meaning |
|---|---|
| F42 | There may be a problem with the Cooktop Power Control Board, or the associated wiring. |
What the cooktop does with the code showing
- Keys respond but zones do not heat — The command arrives; the power does not.
- Several zones fail at once — They share the power board.
- Zones heat weakly or cut in and out — A board or connection failing under load.
- NEAR MISS: keys do not respond at all — That points at the touch side rather than the power board.
Likely causes, in order
- Power control board failed — The most common cause: the board switches heavy current to the zones, and its components fail with heat and age.
- Burnt or loose high-current connection — Second: a high-current connector that has loosened and overheated.
- Heat from blocked ventilation — Third: a crowded drawer or tight installation below, or a clogged cooling fan, cooks the board.
- Supply problem — Last: a supply fault, which shows on other appliances too.
Where to start, and what comes next
- Breaker reset — The first check.
- Smell and listen — Burning smells or crackling mean the breaker stays off.
- Test zones one by one — Whether one, several or all fail guides the technician.
- Check the space beneath — Ventilation affects board life.
What you can safely do
- Breaker reset — Switch the breaker off for a minute, then on.
About 2 min
- Zone survey — Switch each zone on briefly with a pan and note which ones heat.
Tools: pan of waterAbout 10 min
- Clear the underside — Make sure nothing below presses on the cooktop or blocks its vents.
About 10 min
- STOP here if the next check needs a panel off — Anything behind a panel is a power-off technician job, and the tests that follow it are made on live circuits.
Power off before any panel
Safety
Switch off the cooktop’s breaker before removing it from the counter or opening anything underneath: most cooktops are hard-wired, with no plug to pull. A capacitor can hold a charge after the power is off. Let the glass cool before cleaning or inspecting it.
The point to call
Call when the code returns after a reset, and at once if you smell burning. Power board and high-current wiring work means lifting the cooktop with the power off and testing live circuits, which is technician work.
Other Amana cooktop codes close to this one
Which models this reading covers
Generalized information for Amana electric and induction cooktops with touch controls. It is not a reading for Amana gas cooktops, Amana ranges, whose surface codes are listed with the oven codes, or sister brands on the same platform, whose lists can read differently. The details that change inside the line, such as wiring colours, part numbers and connector locations, belong on model pages, and none is published for F42 yet.
All Amana cooktop codes
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
