Frigidaire Dishwasher HO Error Code: What It Means & What to Check
If your Frigidaire dishwasher is showing HO, it usually isn’t a “hard failure” the way some error codes are. On many Frigidaire models, HO indicates a Heat Delay or Heater On mode — meaning the dishwasher is pausing or extending the cycle to get the water to the correct temperature for cleaning and (often) sanitizing.
That said, if the dishwasher stays in HO for a long time or HO appears repeatedly, it can point to a heating performance issue (for example, the water isn’t heating fast enough). The safe checks below help you tell the difference.
What HO usually means on a Frigidaire dishwasher
HO = Heat Delay / Heater On on many Frigidaire dishwashers. The control is waiting for the water temperature to reach a target range. This is most common when:
- The incoming water is cool (first load of the day, winter months, or long hot-water pipe runs)
- You selected options that require higher temps (like Sanitize or high-temp wash)
- The dishwasher is compensating for temperature drop during the cycle
Is HO normal?
Often, yes. Seeing HO occasionally — especially early in the cycle — can be normal. It usually means the dishwasher is doing its job: heating water for better cleaning results.
It becomes a concern if HO shows up frequently and cycles take unusually long, or if dishes come out consistently dirty/cool and drying is poor.
Quick checks you can safely do at home
1) Run the kitchen hot water before starting the dishwasher
In many Florida homes, the dishwasher is far from the water heater. Start your dishwasher with warmer water by running the kitchen hot faucet until it’s hot (not scalding), then start the cycle.
2) Check your cycle options
Sanitize, high-temp wash, and heated dry options can extend the cycle and make HO more likely to appear. If you’re troubleshooting, try one normal cycle with fewer heat-heavy options to see if HO changes.
3) Avoid opening the door mid-cycle
Opening the door dumps heat and steam, which can trigger a temperature recovery period (and extend cycle time).
4) Power reset (if HO seems “stuck”)
- Turn the dishwasher off.
- Unplug it (if accessible) or turn off the breaker for 2–5 minutes.
- Restore power and run a normal cycle.
5) Watch for patterns
Helpful notes for diagnosis include:
- Does HO appear on every cycle or only sometimes?
- Does the dishwasher eventually complete the cycle normally?
- Are dishes coming out cool, dirty, or not drying well?
If HO keeps happening: possible causes
If the dishwasher consistently struggles to heat water to target temperature, HO can show up repeatedly or appear to last “too long.” Potential causes include:
- Heating element / heater circuit not performing correctly
- Temperature sensor (thermistor) reading incorrectly
- Control issue not driving heat properly
- Underlying issues that can affect heating efficiency (model-dependent): low water level, poor circulation, or mineral buildup
When to call Beacon
Call for service if:
- HO appears on most cycles and the dishwasher takes much longer than normal
- Dishes come out cool, not clean, or drying is consistently poor
- The dishwasher seems to stall or repeatedly pauses in heating
- You’ve already tried starting with hot water and HO still persists
Our friendly technicians in yellow can test the heater circuit, check temperature sensor readings, and confirm whether HO is normal heat delay behavior or a heating performance fault.
Local Help in Citrus County
If your Frigidaire dishwasher shows HO regularly and you want a clear answer (normal vs. repair-needed), we’re here to help.
Beacon Services & Appliances
(352) 726-7530 • www.BeaconSaves.com.
Content Update & Editorial Review
Last reviewed: February 13, 2026
Reviewed by: Chris