mypros+
Error code reference

Dacor Dishwasher Error Code HO

Hot

Dacor codesDacor dishwasher codes

Hot – the water is heating in preparation for Hi-Temp or Sanitize operations.

MyPros+ Max

Get the full diagnostic procedure for HO.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What HO means on a Dacor dishwasher

The HO indicator on a Dacor dishwasher is a status display rather than a fault code. It appears during wash cycles that require elevated water temperatures, specifically the Hi-Temp or Sanitize cycle options. When HO is shown, the dishwasher's heating element and control system are actively working to raise the incoming water temperature to the level required before the cycle can proceed. This is a normal, intentional part of cycle operation and indicates the machine is functioning as designed.

The heating element, typically a calrod-style unit located at the bottom of the wash tub, draws significant current to bring water up to the target temperature. The control board monitors the water temperature via a thermistor or temperature sensor and holds the cycle in a heating phase until the setpoint is reached. The duration of the HO display depends on the incoming water temperature from the household supply. Colder incoming water, such as during winter months or in homes where the water heater is far from the kitchen, will result in a longer HO phase.

If the HO display persists for an unusually long time and the cycle never advances, this may point to a component issue rather than normal operation. A failing heating element, a malfunctioning temperature sensor sending incorrect readings to the control board, or low incoming water temperature can all extend this heating phase significantly. In those cases, the HO condition transitions from a normal status into a symptom worth investigating.

Source: manufacturer service documentation.

Common causes of HO

  1. 01

    Normal heating cycle operation

    Wiring / connection

    HO most often appears as a standard status indicator during Hi-Temp or Sanitize cycles. The dishwasher is simply heating water to the required temperature and will advance automatically.

  2. 02

    Cold incoming water supply

    Wiring / connection

    If the household water heater is set low or the supply line is cold, the dishwasher requires more time to reach the target temperature, extending the HO phase noticeably. Running hot water at the kitchen sink before starting the cycle can reduce this delay.

  3. 03

    Failing or burned-out heating element

    Part replacement

    A heating element that has partially or fully failed will cause the dishwasher to stall indefinitely in the HO phase because it cannot raise the water temperature. The element can be tested for continuity with a multimeter.

  4. 04

    Faulty water temperature sensor or thermistor

    Part replacement

    If the thermistor is sending inaccurate temperature readings to the control board, the board may never register that the target temperature has been reached, keeping the cycle locked in HO. The sensor should be tested for correct resistance values at known water temperatures.

  5. 05

    Control board malfunction

    Part replacement

    In less common cases, a faulty control board may fail to properly process temperature sensor data or correctly manage the heating relay, causing the dishwasher to remain in the HO heating state without advancing.

See the test procedure for each cause

Frequently asked questions about HO

What does HO mean on a Dacor dishwasher?
HO is a status indicator that appears when your Dacor dishwasher is actively heating water to reach the elevated temperature required for Hi-Temp or Sanitize cycle options. It is not an error or fault code. The cycle will continue automatically once the water reaches the correct temperature. No user intervention is needed under normal circumstances.
How do I fix the HO code on my Dacor dishwasher?
If HO appears briefly and the cycle advances, no fix is needed since the dishwasher is operating normally. If HO stays on for an extended period without the cycle progressing, check that hot water is reaching the dishwasher by running the kitchen faucet before starting a cycle. If the problem persists, inspect the heating element for continuity and test the temperature sensor for accurate resistance readings.
Is it safe to use my Dacor dishwasher when it shows HO?
Yes, HO indicates a normal heating operation and the dishwasher is safe to use. The display simply means the appliance is raising water to the temperature needed for sanitizing or high-temperature washing. If HO never clears and the cycle does not advance, stop the cycle and investigate the heating element and temperature sensor before running the unit again.
Will resetting my Dacor dishwasher clear the HO display?
Resetting the dishwasher will cancel the current cycle and clear the HO display, but it will reappear when you run a Hi-Temp or Sanitize cycle again since it is a normal status indicator. If HO is stuck and the cycle is not advancing, a reset may temporarily resolve the symptom, but the underlying cause such as a faulty heating element or sensor should still be diagnosed.
How much does it cost to repair a Dacor dishwasher that is stuck on HO?
Repair costs depend on the failed component. A replacement heating element typically runs in the range of $30 to $80 for the part, while a temperature sensor or thermistor is generally $15 to $50. If a control board replacement is needed, parts alone can range from $100 to $300 or more. Adding professional labor will increase the total cost, usually by $75 to $150 depending on your location and service provider.

Related Dacor dishwasher codes

All Dacor dishwasher codes
View all 15 Dacor dishwasher codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass