KitchenAid KBHC109JSS05 microwave Parts

To set the clock on your KitchenAid KBHC109JSS05 wall oven/microwave combo, touch CLOCK SET/START, enter the time using the number pads, then touch CLOCK SET/START (or START) again to save. This model uses a 12-hour clock and does not display a.m. or p.m.; see the KBHC109JSS05 owner's manual.

Steps to set the time

• Make sure the upper oven, lower oven, Timer, and any Timed Cooking are off.
• Touch CLOCK SET/START.
• Use the number pads to enter the time of day.
• Touch CLOCK SET/START or START to confirm.
• If you see a power-failure message (such as PF), clear it with CANCEL and then reset the clock.

If the clock is missing from the display

You can hide or show the time-of-day display from the control panel.

What you want	What to do	What to expect
Remove time of day	Touch and hold CLOCK SET/START for 5 seconds	Time disappears from the display
Return time of day	Touch CLOCK SET/START	Time returns (usually without needing to reset)

Why it matters

The clock setting affects how the control behaves after a power interruption and helps you use timed features accurately (Timer and Timed Cooking). If the time is wrong, cooking schedules and reminders can be off.

Last updated: January 2026

To reset your KitchenAid KBHC109JSS05 wall oven/microwave combo, turn power off at the breaker for about 1 minute, then restore power. When power returns, the display may show a power-failure message; press the appropriate CANCEL key to clear it and reset the clock if needed (see the KBHC109JSS05 owner’s manual).

Quick reset steps (power cycle)

• Turn OFF the circuit breaker (or remove the fuse) that supplies the wall oven.
• Wait 60 seconds.
• Turn the breaker ON.
• If the display shows “PF id = 27” or “PF id = 30”, press LOWER OVEN CANCEL, UPPER OVEN CANCEL, or CANCEL OFF (varies by model) to clear it.
• Reset the clock if needed.

If the control panel seems “stuck” (not a full reset)

Sometimes the oven is not failed; it is locked or waiting for a cancel.

• Control Lock on: Touch and hold 3 CONTROL LOCK for about 3 seconds to unlock.
• “Err” on display: Press the appropriate CANCEL key, then re-enter the setting.
• “RETRY” flashes: Re-enter the selection; an invalid pad was touched.

What you should see after a successful reset

Situation	What it means	What to do
Display lights up for ~5 seconds at power-up	Normal startup	Wait for prompts to finish
“PF id = 27” or “PF id = 30”	Power failure detected	Press CANCEL, reset clock
Display returns to time of day	Normal idle mode	Start cooking as usual

Why it matters

A reset clears many temporary control glitches after a power interruption and helps restore normal keypad response, clock operation, and cooking functions without replacing parts.

Last updated: January 2026

If the display on your KitchenAid KBHC109JSS05 wall oven/microwave combo looks blank, the most common causes are a recent power interruption (the control may be waiting for a cancel/clock reset), a tripped breaker or loose power connection, or a failed control or fuse in the unit.

What to check first (fast, no tools)

• Confirm the unit has power: check the home breaker(s) for the wall oven and reset fully OFF then ON.
• Look for a power-failure message: when power is restored, the display can show a “PF” code that clears by pressing CANCEL and then resetting the clock (see the KBHC109JSS05 owner’s manual).
• Try a control reset: turn the breaker OFF for 5 minutes, then restore power.
• Press the correct cancel key: use LOWER OVEN CANCEL, UPPER OVEN CANCEL, or CANCEL OFF (varies by model).
• If the lower oven is not in use, its display can be blank by design; the upper display typically shows time of day when idle.

If the display is still blank (likely electrical or control issue)

A blank display after confirming power usually points to an internal power-supply problem (fuse, fuse holder, wiring) or a failed electronic control.

Symptom	Most likely area	What we recommend
Completely dead, no lights, no response	Power supply to unit, internal fuse	Check breaker and wiring; test/replace fuse (black) WP4375321 if applicable
Display flickers or resets	Loose connection, failing component	Inspect connections; check terminal block and harness seating
Works sometimes, door-related behavior	Door switch circuit	Inspect/replace microwave door interlock switch W10211972 if symptoms match

Why it matters

A blank display is often a power-interruption or power-delivery problem, but it can also be an internal fuse opening to protect the control. Restoring stable power and clearing a PF condition prevents unnecessary parts replacement and helps you pinpoint whether the issue is in the home supply or inside the appliance.

Last updated: January 2026