If you're looking for help fixing your SubZero Microwave, look no further! Our comprehensive SubZero Microwave repair guide will explain common issues, provide tips, and maybe show you how to repair your appliance.

For the home, kitchen and beyond, Sub-Zero manufactures appliances that homeowners have come to trust. Even a trustworthy appliance requires occasional maintenance or repair, however. If you’re in need of Sub-Zero appliance repair from experienced professionals, your local Appliance Helper can help.

Problem: Microwave Will Not Turn On. 
Possible Causes: 
Short or opened wiring. 
Primary interlock system. 
Secondary interlock switch. 
Touch control panel. 
Key unit. 
Relay. 
Door switch issue. 
Possible Fix: 
Make sure there is power to the product. Try a second outlet if possible. 
Try a second outlet if possible. 
Turn the home circuit breaker to the unit off for 10 seconds then back on again. 
Retest the unit operation. 

Problem: Microwave Key Pad or Controls Do Not Work. 
Possible Causes: 
Short or opened wiring. 
Primary interlock system. 
Secondary interlock switch. 
Touch control panel. 
Key unit. 
Relay. 
Door switch issue. 
Possible Fix: 
Make sure the product has power to it. Test the outlet with another product (lamp, phone charger, etc.) if possible. 
Plug the microwave into a second outlet if possible to see if it operates. 
Reset the unit's electrical supply at the circuit breaker for 30 seconds and retest. 
Verify the unit is not connected to a tripped GFCI. 
If accessible, test the electrical outlet that the unit is plugged into. 
Verify the control panel is not locked. 
Use the pad of the finger and not the tip or fingernail to press the buttons. The touch pad responds to reverse magnetism in fingertips. 
If fingertips are cold, warm the hands before pressing buttons. Warm hands helps the touch pad respond to the input. 

Problem: Oven Operating but Not Heating. 
Possible Causes: 
Short or opened wiring. 
Magnetron. 
Power transformer. 
Rectifier. 
High-voltage capacitor. 
Primary interlock system. 
Touch control panel. 
Low voltage. 
Possible Fix: 
If it is a new installation, make sure the unit is not in demonstration mode. 
If so, the unit will count down very quickly and not heat the interior. 
Refer to Microwave Showroom Demonstration Mode for more information. 
Unplug the unit to reset power, or reset at the electrical supply source. 

Problem: Microwave Does Not Open or Close and Controls Not Responsive. 
Possible Causes: 
Metal key/power supply unit. 
LCD board. 
Switching power supply. 
Primary or door sensing switch. 
Short or opened wiring. 
Wrong operation. 
Low voltage. 
Drawer motor. 
Possible Fix: 
Make sure the product has power to it. Test the outlet with another product (lamp, phone charger, etc.) if possible. 
Plug the microwave into a second outlet if possible to see if it operates. 
Reset the unit's electrical supply at the circuit breaker for 30 seconds and retest. 
Verify the unit is not connected to a tripped GFCI. 
Verify the microwave controls are not locked. See MD Microwave Drawer Control Lock. 
Verify the drawer is not stuck. See Drawer Microwave Is Stuck or Will Not Stay Closed.

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