Open 24/7 for emergencies
A Fujitsu mini split repair starts with the $99 diagnostic, and the repair is priced in writing before anything gets opened. If it’s past fixing, a new one-zone Mitsubishi Electric system is $7,000 to $10,000 installed. The blinking lamps on the indoor unit are a code, and the table below reads them.
Price range
$7,000-$10,000
8yrs @ 7.99%
$99/mo
15yrs @ 9.99%
$75/mo
Monthly figures on the starting price, the whole price financed, on approved credit. The lender sets the final terms. How financing works
Get your price in writing
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Licensed and insuredVirginia Class A contractor #2705192276
24/7 emergency serviceOften same-day, and we will tell you honestly when we can get there.
Our own HVAC installersA dedicated heating and cooling team, separate from our plumbers
Price in writing firstYou see every option priced before anything is ordered
Read your own mini split
What people describe on the phone, and what it usually turns out to be on a Fujitsu.
A Fujitsu head that blinks is reporting a fault: the number of blinks, or the code the remote reads back, points at a sensor, the drain, the fan or the outdoor unit. The table below lists them. On a Fujitsu it’s two lamps flashing a two-digit code, and Fujitsu says to turn off the breaker and call when they do.
The head’s drain pan or line is clogged, or the unit was mounted without enough fall toward the drain. A dirty coil and blower wheel make it worse. It’s a cleaning and a drain fix, not a new unit.
A clogged filter or blower wheel first, then a dirty outdoor coil, then refrigerant. Mini splits lose refrigerant at the flare fittings where the copper meets the unit, and a leak there gets found and fixed. Fujitsu’s own manual says clogged filters cut the airflow and make the unit louder, and it wants them cleaned every 2 weeks.
Check the breaker and the disconnect. If they’re on, the indoor unit can’t talk to the outdoor one (a communication code), or the outdoor board or fan motor has failed.
Dust and moisture living on the coil and the blower wheel inside the head. A deep cleaning takes the wheel and coil back to metal.
Frost that clears every hour or so is the unit defrosting, which is normal. Ice that keeps building, or water that refreezes under the unit, is a drain or a defrost problem.
The blinking lamps
A Fujitsu wall unit flashes its code on two lamps instead of printing it. The green OPERATION lamp gives the first digit, the orange TIMER lamp the second, and the green ECONOMY lamp flashes the whole time, so 4 flashes and then 1 is code 41. A wired remote shows the number.
Read from Fujitsu’s service instructions for these three models. Other Fujitsu lines have their own manuals, so match the model on your unit’s label first.
| Code | Flashes: OPERATION, then TIMER | What it means | What it usually takes |
|---|---|---|---|
| 11 | 1 and 1 | The indoor and outdoor units aren’t communicating | The wiring between the units, or a board |
| 41 | 4 and 1 | Room temperature sensor (thermistor) fault | An indoor sensor |
| 42 | 4 and 2 | Indoor coil (pipe) temperature sensor fault | An indoor sensor |
| 51 | 5 and 1 | Indoor fan motor fault | The fan motor, or a blower wheel that’s dragging |
| 62 | 6 and 2 | Outdoor main control board fault | An outdoor board |
| 65 | 6 and 5 | Inverter power module (IPM) fault | The outdoor inverter board |
| 71 | 7 and 1 | Discharge temperature sensor fault | An outdoor sensor |
| 74 | 7 and 4 | Outdoor temperature sensor fault | An outdoor sensor |
| 94 | 9 and 4 | Overcurrent: the system shut down on too much current | The power side or the compressor, tested before anything is ordered |
| 95 | 9 and 5 | Compressor control fault | The compressor or the board that runs it |
| 97 | 9 and 7 | Outdoor fan motor fault | The outdoor fan motor |
| 99 | 9 and 9 | Reversing valve (4-way valve) fault | The valve that switches the system between heating and cooling |
| A1 | 10 and 1 | Discharge temperature fault | The refrigerant side of the outdoor unit |
Source: Fujitsu ASU9RLS3 service instructions. Codes vary by model and control board: the chart printed on your unit, or its manual, is the final word.
| What you see | What it means | What to do |
|---|---|---|
| OPERATION lamp blinking in heat mode, the unit paused | Defrost: the outdoor coil is melting off its frost, for up to 15 minutes | Nothing. It picks back up on its own. |
| OPERATION and TIMER blinking, ECONOMY blinking fast | A fault code | Count the flashes, turn off the breaker, and call. That’s Fujitsu’s own instruction. |
| Water leaking from the indoor unit | Fujitsu lists it as a reason to stop the unit | Turn it off and call. It’s usually the drain. |
Source: Fujitsu ASU9RLS3 operation manual. Codes vary by model and control board: the chart printed on your unit, or its manual, is the final word.
What it costs
A Fujitsu repair is priced after the $99 diagnostic, because the fix depends on the code and what we find. When it’s past fixing, a new Mitsubishi Electric system is a range we can print, by the number of rooms.
Diagnostic visit
$99
The code read, the fault found, the repair priced in writing.
One zone, installed
$7,000 to $10,000
or $117/mo at 0% APR for 60 months
A new Mitsubishi Electric: one outdoor unit, one head.
Two zones, installed
$11,000 to $15,000
or $183/mo at 0% APR for 60 months
A new Mitsubishi Electric: one outdoor unit, two heads.
Three zones, installed
$12,500 to $18,000
or $208/mo at 0% APR for 60 months
A new Mitsubishi Electric: one outdoor unit, three heads.
Monthly figures: 60mo @ 0% APR on each starting price, the whole price financed, on approved credit. Longer plans lower the payment and cost more in total. The lender sets the final terms. How financing works
Comfort+ members get the $99 diagnostic included in the visit, 15% off any service, and 50% of each repair bill banked toward replacing that system, up to $1,500. How Comfort+ works.
Fix it or replace it
Fujitsu doesn’t publish a way to read the year from the serial number. It’ll tell you the warranty from it, though, and that’s the question that matters before a repair.
Fujitsu has a warranty lookup by serial number: type in the serial from the unit’s label and it shows what’s still covered. The install date itself is on the original invoice or the registration email.
The model number dates it roughly. Fujitsu lists the ASU12RLS3 as retired and still files its older warranties and downloads under the Halcyon name, so a Halcyon-era wall unit is an older system, on the warranty it was sold with.
Four zones, installed
$16,000 to $21,000
or $267/mo at 0% APR for 60 months
One outdoor unit, four indoor heads.
Ducted heat pump system
$8,499 to $21,650
or $142/mo at 0% APR for 60 months
Heat pump and air handler for the whole house.
Monthly figures: 60mo @ 0% APR on each starting price, the whole price financed, on approved credit. Longer plans lower the payment and cost more in total. The lender sets the final terms. How financing works
Want your own number before anyone comes out? The mini split estimator prices your house in a few questions.
A ductless mini split indoor head, still in its wrap, high on the wall of a Northern Virginia room.
When it’s done
When a Fujitsu is past fixing, we’d put a Mitsubishi Electric on the wall, and here’s why.
A Mitsubishi Electric unit on rails above a metal roof inside an aircraft hangar, one of our commercial jobs in Northern Virginia.
The system we put in first
Built to take a beating. Put in by our crew.
Heat lamps, snow and rain on one outdoor unit: that’s Trane’s own film. We’re a Trane Comfort Specialist, on Trane’s own dealer locator, and when you pick a Trane, our crew puts it in.
Films: Trane’s own.
The warranty
Maybe. It comes down to the model and whether it was registered. Here’s how Fujitsu’s works.
Check yours: the warranty lookup by serial number, and Fujitsu’s current warranty statement.
Where we work
Out of Chantilly and Ashburn, across six counties. Pick your town for its own ductless mini split page: the houses there, the county’s permit rules, and the same prices.
Keep reading
Every make we work on, in one place: the brands we repair.
Asked on the phone
The diagnostic is $99, and the repair is priced in writing after it, because a clogged drain and a failed inverter board are very different jobs. If it’s past fixing, a new one-zone Mitsubishi Electric system is $7,000 to $10,000 installed, two zones $11,000 to $15,000. From about $117 a month at 0% APR for 60 months, the whole price financed, on approved credit. How financing works
It’s a fault code. On ASU RLS3 wall units, count the flashes: the green OPERATION lamp gives the first digit and the orange TIMER lamp the second, while ECONOMY flashes nonstop. 1 and 1 (code 11) means the indoor and outdoor units aren’t talking; 5 and 1 is the indoor fan motor. Fujitsu says to turn off the breaker and call. The OPERATION lamp blinking by itself in heat mode is defrost.
Probably not. In heat mode a Fujitsu stops to defrost its outdoor coil for up to 15 minutes, and the OPERATION lamp blinks while it does. If it’s still down after that, or the TIMER and ECONOMY lamps join in, it’s a fault code.
Yes. A Fujitsu mini split moves refrigerant, reads its sensors and drains its water the way any mini split does, and Fujitsu publishes its codes in its own service manuals. Its manual also says there are no parts inside an owner should service, so it’s a job for a licensed technician either way.
Maybe. A model on Fujitsu’s current statement gets 5 years on parts and 7 on the compressor, or 10 on both if it was registered online within 60 days of the install. Older models stay on the statement they were sold with. Fujitsu’s warranty lookup checks yours by serial number, and labor is never covered.
Get the room comfortable
Call (703) 997-9757, 24/7, or send the form at the top with the lamps it’s flashing, and the office calls or texts you back.
SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
Virginia Class A contractor license #2705192276
A repair is quoted in writing after the diagnostic. New system prices are SwiftPro’s installed ranges for a Mitsubishi Electric system, by number of zones.
Fujitsu and AIRSTAGE are trademarks of their owners. Mitsubishi Electric and Diamond Contractor® are trademarks of Mitsubishi Electric Corporation or Mitsubishi Electric Trane HVAC US LLC.