Hisense mini split error code 38

Common causes

• The EEPROM chip loose in its socket.
• A failed indoor control board.

How to fix it yourself

Do the reset and the visual checks, but the underlying repair needs a technician with a meter and the service manual.

1. Reset the system: switch the breaker (or the outdoor disconnect) off, wait a full five minutes so the boards fully discharge, then switch it back on and restart from the remote.
2. If the code comes straight back after a reset, the fault is real and not a glitch.

Switch off power at the breaker before opening either unit. Capacitors in the outdoor unit hold a charge for several minutes after power is cut.

When to call a technician

A technician can reseat or replace the chip, or the board.

Which Hisense units show 38

This page applies to Hisense Hisense inverter single-zone and Hisense multi-zone units. Hisense's own documentation lists 38 as "Indoor unit EEPROM fault", the same definition used across the Hisense it is built on. If your unit shows a code with a different shape (for example a four-character code, or a plain number), it is from a different table; use the lookup with your exact code.

Where Hisense shows this code

Hisense inverter splits store the fault as a number. When the compressor has stopped on a fault, point the remote at the unit and press the SLEEP button 10 times within 10 seconds: the indoor display then shows the code (a second stored fault shows after four more presses). The Sleep, Timer and Running lamps also blink a pattern that matches the code. Newer models show the number on the display without the button sequence. Codes 1 to 21 are outdoor-unit faults and protections; 33 to 41 are indoor-unit faults. 0 means no fault is stored.

Other Hisense codes

Same part of the system as 38:

All Hisense error codes

38 on other brands

The same characters do not always mean the same thing. Check the brand on your unit.

• Haier 38 IPM temperature sensor fault or momentary power failure detected