Manual for KHMS155L

Manual for KHMS155L

Brand: KitchenAid

Category: Microwave Oven

Document Type: Manual

Language: EN

Uploaded: Nov. 21, 2025, 6:04 p.m.

Warranty Information

Offers a one-year full warranty, a second through fifth year limited warranty on key components, and a second through tenth year limited warranty on the stainless steel oven cavity.

Microwave Oven Operation Summary

This manual covers the operation and care of the KitchenAid KHMS155L Microwave Hood Combination. Key functions include:

  • Cooking: Use COOK TIME and COOK POWER to set cooking duration and power level.
  • Sensor Cooking: Allows the oven to automatically set cooking time based on food humidity.
  • Auto Cook/Reheat: Pre-programmed settings for various foods.
  • Custom Defrost: Defrosts by category (Meat, Poultry, Fish) or manually with 30% power.
  • Crisp or Sizzle: Uses the Crisper Pan for browning and crisping foods.
  • Keep Warm: Keeps cooked food warm.

The control panel includes number pads, function keys, and a display for time and prompts. Safety precautions for using the microwave, including grounding and avoiding excessive energy exposure, are detailed.

Troubleshooting and error codes

Problem Solution
Nothing will operate
  • Has a household fuse blown, or has a circuit breaker tripped? Replace the fuse or reset the circuit.
  • Is the appliance wired properly? See Installation Instructions provided with your oven.
Oven will not operate
  • Is the door completely closed? Firmly close door.
  • Is a spacer (on some models) attached to the inside of the door? Remove spacer, then firmly close door.
  • Is the electronic oven control set correctly? See "Microwave Oven Control" section.
  • On some models, is the Child Lock set? See "Child Lock" section.
  • Is the magnetron working properly? Try to heat 1 cup (250 mL) of cold water for 2 minutes at 100% cooking power. If water does not heat, call for service. See "Assistance or Service" section.
Oven makes humming noise This is normal and occurs when the power supply switches the magnetron on and off.
Oven door looks wavy This is normal and will not affect performance.
Turntable will not operate
  • Is the turntable properly in place? Make sure turntable is correct side up and is sitting securely on the turntable support.
  • Is the turntable support operating properly? Remove turntable. Remove and replace turntable support. Replace turntable. Place 1 cup (250 mL) of water on the turntable, then restart oven. If it still is not working, call for service. See "Assistance or Service" section. Do not operate the oven without turntable and turntable support working properly.
Turntable alternates directions This is normal and depends on motor rotation at beginning of cycle.
Display shows messages
  • Is the display showing an "Oven Status" screen, with a letter/number code and instruction to inform KitchenAid? The oven has detected an internal problem. It has run a self-checking program and displayed the error. Call for service. See "Assistance or Service" section.
Display shows time countdown, but is not operating
  • Is the Timer in use? See "Timer" section.
  • On some models, is the Demo Mode in use? See "Demo Mode" section.
Tones are not sounding
  • Are tones turned off? See "Tones" section.
Steam is coming from the vent grille Some steam is normal.
Fan running slower than usual
  • Has the oven been stored in a cold area? The fan will run slower until the oven warms up to normal room temperature.
Cooking times seem too long
  • Is the cooking power set properly? See "Cooking Power" section.
  • Are large amounts of food being heated? Larger amounts of food need longer cooking times.
  • Is the incoming voltage less than specified in "Microwave Oven Safety?" Have a qualified electrician check the electrical system in the home.
Radio or TV interference
  • Is the microwave oven plugged into the same outlet? Try a different outlet.
  • Is the radio or TV receiver near the microwave oven? Move the receiver away from the microwave oven, or adjust the radio or TV antenna.
  • Are the microwave oven door and sealing surfaces clean? Make sure these areas are clean.
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