Sub-Zero is designed to help you get the most out of every moment that you spend together in the kitchen, with tools that ensure fresh food, delicious meals, and spotlessly clean dishes.

Dishwasher Repair

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: Dishwasher Will Not Turn On or Start. 
Possible Fix: 
Door not closed securely. 
Delay option turned on. 
Water supply not connected or turned on. 
Blown fuse or tripped circuit breaker. 
Door latch is engaged when door is open. 

Problem: Dishwasher does not drain. 
Possible Fix: 
Blocked or clogged filters. 
Clogged or kinked drain hose. 
Debris in drain hose. 
Blocked drain pump or garbage disposal. 

Problem: Dishwasher will not fill with water. 
Possible Fix: 
Verify that the water shut off valve is on. 
Check for crimps in the water supply line. 
Make sure the door was firmly closed before turning on the unit. 
Verify the filters are clean. 
Verify the Delay Start option is not activated. 
Verify the spray arms are not clogged with debris or hard water. 
Make sure that water pressure is between 20 - 120 psi. 

Problem: Dishwasher Dishes Not Clean After Wash Cycle 
Possible Fix: 
Spray arms not rotating or clogged. 
Too much or too little dishwasher detergent. 
Lack of rinse aid. 
Wrong wash program selected. 
Dishwasher not loaded properly. 
Clogged filters or drain. 
Diverter valve not working. 

Problem: Dishwasher Has No Power. 
Possible Fix: 
Verify the unit power supply meets specifications. 
Reset power at the power supply source (electrical box or circuit breaker). 
Often, local code requires dishwashers have a switch under the kitchen sink that turns on and off to supply power to the unit. 
The switch may have been accidentally turned off. 
Verify switch is on and power is going to the unit. 
Verify the power cord is plugged into electrical outlet. 
Unplug the unit and plug back into the outlet. 
Verify the unit is on a dedicated power circuit and does not share the circuit with other appliances. 
Verify the electrical outlet has power by plugging in a different appliance, extension cord, or phone charger to test. 
Verify the unit is not connected to a GFCI and, if so, that other appliance or outlets are working. 

Problem: Dishwasher Controls Are Unresponsive 
Possible Fix: 
Clean the controls with a damp cloth. 
Close the door completely, then open the door. 
Verify the child lock and Sabbath feature are not turned on. 
Turn the home circuit breaker to the unit off for 30 seconds and back on again. Retest the unit operation. 

Problem: Dishwasher light bulb will not turn off. 
Possible Fix: 
Open and close the door a few times. If light starts to function, or flickers, it may be a switch issue that requires a service call. 
Turn the home circuit breaker to the unit off for 30 seconds then back on again then retest the unit operation. 

Problem: Dishwasher makes a lot of noise. 
Possible Fix: 
Improperly loaded dishes. 
Blocked spray arms. 
Machine is not level. 
Possible motor issue. 
Filter or drain plug loose.

Microwave Repair

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.

Range Repair

OPERATION 
Range does not operate. 
• Verify power is on. 
• Verify electrical power to the range and home circuit breaker is on. 
• The oven will automatically turn off after 12 hours of continual use, except in Dehydration or Sabbath mode. 
Clock display turns off. 
• The clock display is in standby power mode.  

OVEN 
Oven temperature issue. 
• Contact Wolf Customer Care  
No control knob display. 
• Pull the oven control knob out and reinsert fully. Turn the circuit breaker off for 5 seconds, then turn back on. 
No response from control panel touch pads. 
• Turn the oven bezel to OFF to exit Sabbath mode. 
• Turn the circuit breaker off for 5 seconds, then turn back on. 
"SAb" displayed on the oven control knob. 
• Turn the oven bezel to OFF to exit Sabbath mode. 
"PF" displayed on the oven control knob. 
• The unit had a power outage. Turn the selector bezel to a cooking mode, then back to OFF to reset. 
• Turn the circuit breaker off for 5 seconds, then turn back on. 
"OPP" displayed on the oven control knob. 
• One of the ovens may be in self-clean mode. If one oven is in self-clean, the other can not be used. 
"OE", "OC" or other error displayed. 
• Contact Wolf Factory Certified Service. 
Oven "pops" or "bangs" during preheat or cool down. 
• Normal with new oven cavity expansion and contraction. 
• Run a self-clean cycle. If it persists, contact Wolf Customer Care 

RANGE SURFACE 
Erratic flame, poor ignition or no ignition. 
• Verify the burner caps are positioned properly. 
• Clean the burner and igniter properly. 
• If water spilled over recently, let the area dry completely. Use a hair dryer, if desired. 
• If a burner cap secures to the burner head, verify it is tightly fastened. 
• Push in the knob, then release. Verify the knob springs back. 
Charbroiler clicks continually. 
• Verify the knob is set fully at HI. 
Griddle indicator light flashes. 
• Turn the knob off, then back on. The flame was lost and the unit entered safety lock-out mode.

Refrigerator Repair

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.

CAUSE-COLON 
Fan in unit not working properly 
Temperature sensor or thermostat malfunction 
Compressor, evaporator, or condenser issue 
Problem with door seal or gasket 

CORE-ISSUE-COLON 
What to do when temperatures rise in a refrigerator 
Warm or high temperatures reported in refrigerator section 
Why is the refrigerator not cooling or will not hold set temperature? 
Unit does not cool well in warm months or humid, warmer temperatures 
Food spoils before expiration date or food going bad quickly 
Refrigerator stopped working 

STEPS TO VERIFY ISSUE: 
Only a Factory Certified Service technician can determine the exact cause of a cooling issue. 
New Installation: 
Verify the unit is on and running for at least 24 hours. If not, wait 24 hours for unit to cool properly. 
Verify the door closes and was not left ajar for a long time. Turn the door ajar alarm on if it is not on to make sure the door is closing all the way. See How to Turn on a Door Ajar Alarm for instructions. 
Correct or remove anything blocking the door from closing. 
New groceries or warm food will raise temperatures for a time. Temperatures should return to normal after several hours. 
It is not necessary to clean the condenser on a unit that is less than 6 months old. 

For any warm temperatures in a Sub-Zero refrigerator: 
Check the setpoint temperatures for the compartment. See Refrigerator and Freezer Temperature Settings. 
On an electronic control panel, 38°F is the factory setting. 
For a dial control, set the dial between 4 and 6. 1 is warmest, and 10 is coldest. 
200, 300, and 500 Series Sub-Zero products have dial controls. 
Verify the door closes and was not left ajar for a long time. Turn the door ajar alarm on if it is not on to make sure the door is closing all the way. See How to Turn on a Door Ajar Alarm for instructions. 
Correct or remove anything blocking the door from closing. 
New groceries or warm food will raise temperatures for a time. Temperatures should return to normal after several hours. 
Clean the Condenser if not done in the last 6 months. 
Note: If the temperature is above 48 degrees (set at 38), it is unlikely to recover from a condenser cleaning. 
Contact Factory Certified Service to schedule an appointment for repair. The service call can be canceled if the temperatures do return to normal. 
Verify the unit is not in Showroom mode. This is only likely if unit was a product on display in a dealer showroom.  
If temperatures do not appear, or the control panel does not respond, verify the unit is not in Sabbath mode.  
If the lights are off and there is no cooling in the refrigerator but the freezer is working normally, make sure the refrigerator was not disabled.  
Verify if only one or all sections are not cooling. This information is helpful if service is necessary. 
Wait 24 hours for the unit to return to normal temperatures after correcting any or all of the above. 
If the refrigerator is still warm after these steps are complete, service is necessary to expertly diagnose and repair the product. Contact Factory Certified Service to schedule an appointment for repair.