ACiQ EH0E error code

What it means

EH0E means the indoor unit thinks condensate water level is unsafe or the water-level alarm circuit is not reading correctly. Do not ignore it because water can overflow from the indoor unit.

Urgency

Likely causes

1. Brief power event, brownout, or unstable supply voltage
2. Loose power connection, reactor, or outdoor electrical component problem
3. Inverter/IPM protection or current-detection fault
4. Compressor winding, drive, or outdoor board fault after power checks pass

Homeowner fix

Turn the unit off to prevent overflow. If you have an external condensate pump with a visible reservoir, make sure it has power and is not obviously full or blocked. Do not open the indoor cabinet. Restart once only if no water is present.

When to call a pro

Call a licensed HVAC technician if water is present, the alarm returns, or the drain/pump is not plainly external and accessible. Tell them the code is EH0E water-level alarm.

Repair vs replace

This is normally a repair diagnosis, not an automatic replacement signal. If a technician confirms a major board, compressor, fan motor, or refrigerant-circuit repair on older out-of-warranty equipment, compare the quote with replacement.

• ACiQ Multi-Zone Extreme Series 2-Zone 18,000 BTU R-454B 208/230V (ACIQ-18Z-HH-M3C)

  Multi-Zone Extreme Series

• ACiQ Multi-Zone Extreme Series 3-Zone 27,000 BTU R-454B 208/230V (ACIQ-27Z-HH-M4C)

  Multi-Zone Extreme Series

• ACiQ Multi-Zone Extreme Series 4-Zone 36,000 BTU R-454B 208/230V (ACIQ-36Z-HH-M5C)

  Multi-Zone Extreme Series

• ACiQ Multi-Zone Extreme Series 5-Zone 48,000 BTU R-454B 208/230V (ACIQ-48Z-HH-M6C)

  Multi-Zone Extreme Series

For your technician

Technician note: section 7.4.1.9 lists wiring mistakes, water-level switch, water pump, and indoor PCB for the water-level alarm. Page context: ACiQ maps this display to the Multi-Zone Extreme Series line; source: ACiQ Multi-Zone Service Manual and shared Midea D5CMRA Table 20 display reference; display convention: match the letter E, letter H, zero, and letter E marker exactly before comparing neighboring codes.

Which systems show it

• ACiQ Multi-Zone Extreme Series R-454B systems using the shared Midea/ACiQ multi-zone platform.
• ACiQ Multi-Zone Standard Series R-454B systems where the ACiQ service manual lists the same EC/EH/EL/PC diagnostics.
• ACiQ wall-mounted, cassette, duct, console, and AHU indoor units listed in service manual section 7.2.

Sold under more than one brand

Shared with Midea. ACiQ and Midea document this code from the same manufacturer source, so EH0E means the same thing on either badge and the steps above apply.

Related troubleshooting

Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.

Reset note

Turn the unit off to prevent overflow. If you have an external condensate pump with a visible reservoir, make sure it has power and is not obviously full or blocked. Do not open the indoor cabinet. Restart once only if no water is present.

Manual trigger

EH0E means the indoor unit thinks condensate water level is unsafe or the water-level alarm circuit is not reading correctly. Do not ignore it because water can overflow from the indoor unit.

Related codes

Source

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