A Hitachi air conditioner has features allowing it to display different lights. However, these lights flash on specific occasions.
You might notice your Hitachi air conditioner constantly flashing orange, red, white, or even its timer light. These flashes can be annoying if you don’t know why it’s happening.
Different light flashes have different meanings, and it is essential to be aware of the meanings to resolve them.
The orange light indicates that the streamer unit needs cleaning and the red light indicates faulty components in the AC. In addition, flashing white lights in the AC indicates that the air filter needs cleaning, and blinking timer lights can be associated with several error codes.
In this article, you’ll learn the meanings of each light flash and how to resolve them. I’ll also give details on several error codes on your Hitachi air conditioner.
What Does the Flashing Orange Light Mean on Hitachi AC and How to Fix It?
The streamer unit requires cleaning when orange light flashes in your Hitachi air conditioner.
The only way to resolve the orange flashing light in your Hitachi air conditioner is to clean out the streamer unit.
After cleaning out the streamer unit, reset the time lamp to turn off the orange light indication.
Hitachi AC Red Blinking Light; Meaning and Fixes
Blinking red lights on your Hitachi air conditioner usually means a fault somewhere in the unit.
Here are possible reasons why your Hitachi AC is blinking red light:
- Failure of the capacitor in the air conditioner
- Burning out of the condenser fan in the air conditioner
- Damaged compressor contactor
Contact an authorized Hitachi AC professional to do the following:
- Check if the capacitor and condenser in the air conditioner are faulty and install new ones
- Install a new compressor contactor
Why Is There a White Flashing Light From My Hitachi AC (Reason and Fixes)?
If you notice your Hitachi air conditioner flashing white light, it must mean that the filter in your air conditioner needs cleaning.
The filter helps catch the dust and dirt entering the air conditioner before leaving the vent, providing you with clean air.
At times, the filter in your air conditioner gets clogged with dirt that contaminates and blocks airflow through the vents.
You need to clean the filter in your air conditioner every fifteen days, and here are the reasons why:
- Cleaning the filter helps improve your air conditioner’s performance.
- Cleaning the filter helps to reduce energy consumption and prevent restricted airflow.
- Cleaning the filter from time to time helps to ensure that the air conditioner is free enough to provide cool air to the room.
- Cleaning the filter in your air conditioner helps to ensure the release of clean air.
However, the dust and dirt clog up the filter and can contaminate the air flowing through the vents.
- Regularly cleaning the filter in your air conditioner helps to curb health risks.
For example, you could get respiratory issues, allergic rhinitis, etcetera when you breathe in contaminated air.
- If you don’t clean your filter regularly, dust and dirt will build up in the air conditioner and affect the air conditioner’s lifespan.
Here are steps to clean the filter of your Hitachi air conditioner:
- First and foremost, disconnect your Hitachi air condition from the power supply.
- Carefully open the front panel by holding it on both sides and letting it swing upwards.
- Find the filters and pull them out of the unit gently.
- Use a waster at room temperature to wash the filters. Avoid using detergent on the filters to prevent deterioration.
- Allow the filters to dry completely but avoid drying them through exposure to the sun.
Too much heat can cause the filters to shrink.
- After drying the filters, carefully push them back into the air conditioner. Ensure that the “FRONT” mark faces the front and closes the panel.
- Restore power to the air conditioner and turn it on for use.
Why Does My Hitachi AC Timer Light Keep Blinking? (Reason and solution)
The timer light on your air conditioner will show up when you set the timer. In some situations, your timer light might keep blinking more than once.
Here are the reasons why the timer light on your Hitachi air conditioner will keep blinking:
#1. Hitachi Timer Light Blinking x1
When your Hitachi timer light blinks x1, it simply means that the temperature of your heat exchanger is too low in heating and cooling modes.
The timer light begins to blink x1 when it detects the malfunction for the third time for the interval reading that runs for three minutes.
Here are the causes of the Hitachi AC Timer light x1 malfunction:
- You did not connect the heat exchanger thermistor while in heating mode.
- The reverse valve is faulty.
#2. Hitachi Timer Light Blinking x2
If the Hitachi timer light blinks x2, your outdoor unit may undergo a forced operation. The outdoor unit might also be trying to balance after a forced operation.
The cause of the Hitachi AC timer light x2 malfunction is damaged electrical parts in your outdoor unit.
#3. Hitachi Timer Light Blinking x3
Suppose your Hitachi timer light is blinking x3. It must mean that the interface of the outdoor or indoor unit is faulty.
The defectiveness of the outdoor unit interface usually occurs when there is an obstruction in the interface signal of your outdoor unit.
Here are the causes of the Hitachi AC Timer light x3 malfunction:
- There is a defect in your indoor unit’s interface circuit.
- There is a defectiveness in the outdoor unit’s interface circuit.
#4. Hitachi Timer Light Blinking x4
The cause for the Hitachi timer light blinking x4 is the presence of faulty parts in the outdoor unit.
You’ll start to notice the flashing when the AC detects the malfunction eight times within 30 minutes.
To get further details, look at the AC’s self-diagnosis display.
#5. Hitachi Timer Light Blinking x9
If your Hitachi timer light is blinking x9, it probably means that the room or heat exchanger thermistor has become faulty.
Here are the causes of the Hitachi AC Timer light x9 malfunction:
- The room thermistor is maybe open or short-circuited.
- The heat exchanger thermistor is maybe open or short-circuit.
#6. Hitachi Timer Light Blinking x10
If your Hitachi timer light is blinking x10, it is most likely because you have overcharged the DC fan motor.
Here are the causes of the Hitachi AC Timer light x10 malfunction:
- The indoor fan is locked.
- The indoor fan motor is faulty.
- The indoor power control board is faulty.
#7. Hitachi Timer Light Blinking x13
If your Hitachi timer light is blinking x13, there must be an error in the data reading.
How Do You Check Errors on Your Hitachi AC?
Hitachi air conditioners can produce error codes that notify you of a fault or error in your air conditioner.
Here are the types of error codes and how to fix them:
#1. Hitachi AC Error Code Blinking Four Times
Hitachi AC error code blinking four times is associated with EEPROM data error. EEPROM stands for electrically erasable programmable read-only memory.
The EEPROM is a space to store the codes in your Hitachi air conditioner. Here are errors that can trigger the AC error code blinking four times:
- Failure of the EEPROM circuit components
- Inserting incorrect EEPROM components
- EEPROM components failure
The solution to the Hitachi AC error code blinking four times is to contact a Hitachi AC professional to do the following:
- First, check for faults in the EE components and get them replaced.
- Next, replace the malfunctioning components in the control board of the outdoor unit.
- Finally, reassemble the EE components.
#2. Hitachi AC Error Code Blinking Five Times
The Hitachi error code blinking five times falls under the “cooling freezer protection code.”
This error code means the temperature of your indoor coil is too high during heating and too low during cooling.
Here are reasons why your Hitachi AC error code would be blinking five times:
- Room temperature is excessively low.
- Your fan speed is too low.
- You did not correctly install your indoor unit.
- There is something wrong with your indoor unit’s air blowing.
- The duct resistance is too high.
- The dirt in the air filter is restricting airflow.
Here’s how to fix the Hitachi AC error code blinking five times:
- First, increase the fan speed to high speed.
- Clean out the dirt in the Hitachi AC filter.
If none of those work, you can contact an authorized Hitachi AC professional to do the following:
- Clean your air conditioner thoroughly.
- Inspect the fan motor, indoor fan, and evaporator coil for malfunctions.
- Inspect the duct length and volume control valve for malfunctions.
- Reinstall your indoor unit by following the guidelines in your user manual.
#3. Hitachi AC Error Code Blinking Seven Times
The Hitachi error code blinking seven times falls under the “communication faults between indoor and outdoor units” code.
Here is why your Hitachi error code would be blinking seven times:
- The communication circuit fuse is open.
- The communication cable has the wrong specifications.
- The indoor-outdoor unit communication cable is faulty.
- The outdoor-indoor unit cable is loosely connected.
- There is a wrong cable connection between the indoor and outdoor units.
- The outdoor or indoor unit control board is faulty.
To fix the Hitachi AC error code blinking seven times, call an authorized Hitachi AC professional to do the following:
- Reconnect the incorrectly connected cable.
- Replace the damaged communication cable.
- Fix or replace the faulty indoor or outdoor control board.
- Find out if your communication circuit is open and fix it if it happens to be a short circuit.
Here is a table to show the categories several error codes belong.
| Error Code | Category |
|---|---|
| Error Code Blinking Four Times | Electrically erasable programmable read-only memory. |
| Error code blinking five times | Cooling freezer protection code. |
| Error code blinking seven times | Communication faults between the indoor and the outdoor units. |
