- HVAC
- Air conditioner
97
Fujitsu 97 on an air conditioner: outdoor unit fan motor error
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
On Fujitsu wall-mounted splits, code 97 (operation 9 blinks, timer 7, economy continuous) means the outdoor unit fan does not reach its minimum speed. Turn off the power, clear around the outdoor unit without opening it and call authorised service.
Safety first
Stop and check this first
- Do not put hands or objects through the fan grille or open the outdoor unit panels: the fan can start and there are dangerous voltages inside. Turn off the power before removing any obstruction.
- If 97 repeats 5 times in a row, Fujitsu says the compressor and fan stop permanently: do not reset again and again, call authorised service.
Safe checks you can perform
- Identify the code from the lamps
- Clear around the outdoor unit
- Heat sources next to the outdoor unit
- Fan rotation, motor and board voltages
Leave these tasks to a qualified professional
- Do not attempt this professional task: Mechanical outdoor fan test
- Do not attempt this professional task: Board output voltage measurement
- Do not attempt this professional task: Joint motor and board replacement when needed
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Mechanical outdoor fan test
What they doThe technician turns the fan by hand with the unit stopped to find loose blades, damaged bearings or a locked motor.
They must show youhow the fan turns and the condition of the blades and bearing.
In writingcode 97, test result and any part replaced with the reason.
Board output voltage measurement
What they doThey measure the voltages to the motor at the board connector and compare them with the manual.
They must show youthe voltages measured between red and black and between white and black.
In writingmeasured values, diagnosis and date.
Joint motor and board replacement when needed
What they doIf the motor has failed, Fujitsu says to replace the outdoor fan motor and the main PCB together.
They must show youthe test that confirms the failed motor.
In writingparts replaced, reason and the follow-up operating test.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Identify the code from the lamps
- Who:
- you, looking at the indoor unit or the wired remote.
- How:
- for 97, Fujitsu describes the operation lamp (green) blinking 9 times, the timer lamp (orange) 7 times and the economy lamp flashing continuously; the wired remote shows 97.
- Result that matters:
- confirming it is 97 and not another outdoor unit code.
- If the pattern matches:
- continue with the next steps.
- If the pattern differs:
- find its own page before acting.
- Evidence to keep:
- a short video of the lamps or a photo of the remote.
Evidence: Fujitsu General air conditioner wall mounted type service manual, ASEH07/09/12/14KMCG and AOEH07/09/12/14KMCG
Clear around the outdoor unit
- Who:
- you, with the unit off and without opening it.
- How:
- switch off with the remote and turn off the breaker. Look from outside for leaves, bags, branches, snow or a cover blocking the fan grille and remove them without putting hands or tools through the grille. The user manual asks you to keep the outdoor unit's surroundings clean and not place items around it.
- Result that matters:
- nothing stopping the fan from turning or blocking the air outlet.
- If something was blocking:
- remove it, restore power and watch whether 97 returns.
- If nothing was there:
- do not try to turn the fan; that test is for the technician.
- Evidence to keep:
- photos of the outdoor unit before and after.
Evidence: Fujitsu General air conditioner wall mounted type service manual, ASEH07/09/12/14KMCG and AOEH07/09/12/14KMCG · Fujitsu General operation manual, wall-mounted air conditioner ASYG12KGTF
Heat sources next to the outdoor unit
- Who:
- you, looking from outside.
- How:
- check whether other heat-producing equipment, hot air exhausts or an enclosed space where heat builds up sit next to the outdoor unit. Fujitsu says that if the temperature around the motor is excessive, operation can restart once it drops.
- Result that matters:
- whether the motor protection may have tripped from surrounding heat.
- If there is a clear heat source:
- mention it to the technician or installer to review the location.
- If there is none:
- the technician will check the fan, motor and board.
- Evidence to keep:
- photos of the surroundings and the rough outdoor temperature when the code appeared.
Evidence: Fujitsu General air conditioner wall mounted type service manual, ASEH07/09/12/14KMCG and AOEH07/09/12/14KMCG
Fan rotation, motor and board voltages
- Who:
- a qualified air conditioning technician or authorised service.
- How:
- with the unit stopped, turns the fan by hand, checks the outdoor fan motor per the manual and measures at the board connector about 306 to 374 V DC between red and black and 15 V (plus or minus 1.5 V) between white and black, as Fujitsu specifies.
- Result that matters:
- whether the fan, the motor or the main PCB is at fault.
- If the motor is faulty:
- Fujitsu says to replace the motor and the main PCB.
- If the voltages are wrong:
- Fujitsu says to replace the main PCB.
- Evidence to keep:
- hand rotation result, motor test and measured voltages.
Requires opening the outdoor unit and measuring high DC voltages on the board: qualified technician only.
Evidence: Fujitsu General air conditioner wall mounted type service manual, ASEH07/09/12/14KMCG and AOEH07/09/12/14KMCG
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- HVAC
- Brand
- Fujitsu
- Product type
- Air conditioner
Known code variants
- E97
- E:97
- Fujitsu 97
- Fujitsu E97
What it means
In the service manual for the ASEH07/09/12/14KMCG series with AOEH outdoor units, Fujitsu General explains that the outdoor fan stops if it turns at less than 100 rpm 20 seconds after starting; if this repeats 3 times in a row within 60 seconds the compressor and fan stop, and after 5 repetitions the stop is permanent. Other models may differ. The code alone never proves that a specific part is faulty.
Warnings and stop conditions
- Higheditorial warning
Do not put hands or objects through the fan grille or open the outdoor unit panels: the fan can start and there are dangerous voltages inside. Turn off the power before removing any obstruction.
Evidence: Fujitsu General air conditioner wall mounted type service manual, ASEH07/09/12/14KMCG and AOEH07/09/12/14KMCG · Fujitsu General operation manual, wall-mounted air conditioner ASYG12KGTF
- Mediumsource verified
If 97 repeats 5 times in a row, Fujitsu says the compressor and fan stop permanently: do not reset again and again, call authorised service.
Evidence: Fujitsu General air conditioner wall mounted type service manual, ASEH07/09/12/14KMCG and AOEH07/09/12/14KMCG
Symptoms and causes
Probable causes · in order
- Fan not turning freelyCommon
A caught or loose fan blade, a damaged bearing or a locked motor, which Fujitsu checks by turning the fan by hand with the unit stopped.
Evidence: Fujitsu General air conditioner wall mounted type service manual, ASEH07/09/12/14KMCG and AOEH07/09/12/14KMCG
- Motor protection from surrounding heatPossible
Fujitsu lists motor protection triggered by a rise in surrounding temperature, for example when heat-producing equipment is nearby.
Evidence: Fujitsu General air conditioner wall mounted type service manual, ASEH07/09/12/14KMCG and AOEH07/09/12/14KMCG
- Outdoor fan motorPossible
A failed motor; in that case Fujitsu says to replace the outdoor fan motor together with the main PCB.
Evidence: Fujitsu General air conditioner wall mounted type service manual, ASEH07/09/12/14KMCG and AOEH07/09/12/14KMCG
- Main PCBPossible
If the board's output voltages to the motor are not those in the manual, Fujitsu says to replace the main PCB.
Evidence: Fujitsu General air conditioner wall mounted type service manual, ASEH07/09/12/14KMCG and AOEH07/09/12/14KMCG
Virtual technician
Does 97 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Fujitsu General · 2024 · manual
- 2
Fujitsu General operation manual, wall-mounted air conditioner ASYG12KGTF
Fujitsu General · manual
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