Fix My Error Code

Frigidaire · Refrigerator

Frigidaire Refrigerator H1 Error Code

Freezer temperature sensor fault

What this error means

H1 on Frigidaire Gallery and Professional refrigerators means the freezer thermistor signal failed.

How H1 is detected

When H1 appears on a Frigidaire refrigerator, the control board has confirmed that water did not leave the machine within the programmed drain window. On Frigidaire FRSS2623AS, Frigidaire GRFS2853AF, and similar variants, the drain pump runs for a fixed interval—often three to seven minutes on washers and dishwashers—while a pressure switch or turbidity sensor verifies the tub or sump is empty. If water remains, the cycle stops to prevent spin with a full tub or overflow on the next fill.

Most H1 calls are resolved without parts: unplug and reseat freezer thermistor connector. Restricted drain paths mimic pump failure because the impeller spins against a blocked hose or filter. Document whether the pump hums audibly during the drain step; a humming pump with no water movement points to a clogged filter or kinked hose, while silence may indicate a failed pump motor or loose wiring at the harness.

After clearing blockages, run a short cycle and listen at the drain hose for steady water flow. If H1 returns on the next load with a clean filter and straight hose, measure resistance at the pump motor connector per the service manual for your model before ordering a replacement pump assembly.

Common causes

  • Sensor unplugged at evaporator cover
  • Ice encasing sensor bulb
  • Broken wire in freezer harness
  • Main board input fault

Step-by-step fixes

  1. 1Unplug and reseat freezer thermistor connector
  2. 2Defrost ice around sensor if visible
  3. 3Compare resistance to Frigidaire chart at room temp
  4. 4Allow 24 hours stable temps after repair

When to call a technician

Correct ohms at plug with persistent H1 needs main control.

Affected models

  • Frigidaire FRSS2623AS
  • Frigidaire GRFS2853AF
  • Frigidaire FFHB2750TS

Prevention & maintenance

  • Clean drain filters and hose terminations monthly on high-use refrigerators to prevent H1 from lint and food debris buildup.
  • Record when H1 appears in the cycle and whether it clears after a 60-second power reset on your Frigidaire refrigerator—that detail speeds diagnosis if you call service.
  • Keep the model and serial number from the rating plate when ordering parts for H1; Frigidaire uses multiple revisions with different harness lengths and board firmware.
  • Photograph wiring connector orientation before disconnecting any component while troubleshooting H1; reversed plugs on pumps and valves cause immediate repeat faults.
Medium30 min