ERROR CODE · SUB-ZERO FREEZER · ORANGE COUNTY
Sub-Zero Freezer Error Code EC24
Last updated:
Defrost heater not heating. The defrost cycle is failing completely.
What EC24 means.
EC24 on a Sub-Zero freezer column is the more severe sibling of EC20. The controller energized the defrost heater on schedule, but the coil temperature did not rise at all. That means the heater is open-circuit, the safety thermostat is open, or the wiring to the heater is broken. Once EC24 logs, frost will build on the evaporator until airflow stops and the cabinet warms over 48 to 96 hours.
Most common causes.
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Defrost heater element open-circuit (most common; heater coils fail with age).
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Defrost safety thermostat (bimetal) failed open.
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Wire harness to the heater chewed or broken near the evaporator pan.
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Control board defrost relay failed.
Try this first: safe DIY troubleshooting.
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Manual defrost: unplug for 24 hours with the door open and towels at the base.
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After defrost, restore power and listen. If the compressor runs and you hear the evaporator fan, EC24 may have temporarily cleared.
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It will return. Plan for service before food starts thawing again.
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Do not bypass the safety thermostat. It is a fire-prevention device.
What does this repair cost?
Typical part cost
$80–$220
Full repair (parts + labor)
$320–$550
Time on site
90–120 min
Prices reflect 2026 OEM part costs for the Orange County market. The diagnostic is $65, waived when you authorize the repair. 90-day parts and labor warranty.
What happens when you call us
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Call or book online
We pick up Mon-Sun 7am-9pm. Same & next-day appointments available, 7 days a week. Calls before 11am usually get same-day; later calls go to the next morning.
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On-site diagnostic
Our technician arrives in the window we promised, runs a full diagnostic, and gives you a fixed-price repair quote before any work. Service call from $65 (varies by appliance type), waived with the repair.
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Repair on the first visit
Common parts (compressor relays, drum bearings, control boards, igniters, drain pumps) ride on every truck. Most appliances are working again in the same visit.
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90-day warranty in writing
Every repair comes with a written 90-day warranty covering both parts and labor. If something fails inside that window, we come back at no charge.
Recent customer reviews
5.0 stars across 337 reviews on Yelp . Showing the 3 most recent.
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Work was done well and technician was on time and communicative! I used texts and they were answered very quickly. I will use them again.
Verified on Yelp → -
Ivan is the only repairman I would ever trust with our appliances! We have used him 3 times (for our dryer, our dishwasher, and most recently our oven). We called him when our oven unexpectedly stopped working and he got us scheduled right away and had it fixed immediately! He is prompt, incredibly knowledgable, very friendly, reasonably priced, and honest! Look no further if you have any appliance repair needs! Thank you again Ivan!! - Kate
Verified on Yelp → -
Our ice maker in our GE Profile refrigerator stopped working. We contacted several vendors through Yelp and Esquire was quick to respond and were able to come out the next day. Our ice maker was back up and running right away! They were able to buy the proper part and install it all in one day. They were courteous and reasonably priced. I couldn't be more pleased with how it went.
Verified on Yelp →
Don't wait. Sub-Zero EC24 usually gets worse.
We diagnose, quote in writing, and most repairs finish on the first visit. Diagnostic is $65, waived with the repair.
- Same & next-day appointments available, 7 days a week
- Service call from $65 (varies by appliance), waived with the repair
- 90-day parts and labor warranty