York & Coleman HVAC Repair in the Bay Area | Triton HVAC

Q: Why does the LED color matter on a York furnace?

Because the color selects the chart. On York, Coleman, and Luxaire boards, red flashes are faults, amber flashes are airflow and venting conditions, and green indicates normal operating states. Four amber is restricted indoor airflow, while four red would mean something else entirely. Counting flashes without noting the color is the most common way homeowners misdiagnose these furnaces.

Q: What do FC3, FC4, FC5, and FC6 mean on my York AC?

They are pressure switch lockouts on the outdoor control. FC3 and FC4 indicate a high pressure condition, typically a dirty condenser coil, a failed outdoor fan, or an overcharge. FC5 and FC6 indicate low pressure, typically a refrigerant leak or a restriction. All four are the system protecting itself, so the fix is finding the underlying cause rather than resetting the board.

Q: How much does York furnace or AC repair cost in the Bay Area?

It depends on the part. A flame sensor is about 90 to 250 dollars and a hot-surface igniter 120 to 350 dollars; a blower motor runs 400 to 700 dollars and a furnace control board 200 to 600 dollars, with most furnace repairs in the 129 to 800 dollars range. On the AC side a capacitor is 120 to 350 dollars, a contactor 120 to 320 dollars, a refrigerant leak repair and recharge 180 to 650 dollars, and a compressor 900 to 1600 dollars. The diagnostic fee is credited toward the repair when you approve the work.

Q: Do you service York in my city?

We cover the East Bay, Tri-Valley, and Peninsula, including Hayward, Redwood City, Pleasanton, San Mateo, and San Ramon, with same-week and often same-day appointments. Call (888) 993-5699 to book.

If you own a York, you may also own a Coleman, a Luxaire, or a Fraser-Johnston without realizing they're relatives. All four are Johnson Controls Unitary Products brands built on shared platforms — the same UTEC / Simplicity control boards, the same diagnostic flash codes, and largely interchangeable parts. That's why one page covers the whole family: a tech who knows York can service a Coleman package unit or a Luxaire furnace with the same charts and the same parts on the truck. Triton repairs all four across the East Bay, Tri-Valley, and Peninsula, and we stock the common wear parts — igniters, flame sensors, capacitors, contactors, pressure switches — so most repairs finish in one visit.

York is worth knowing well here for one reason: it's extremely common in tract and production housing. Whole East Bay and Tri-Valley subdivisions went up with the same York furnace and matched condenser, so the same faults show up house after house on the same street.

Systems we repair

Gas furnaces — 80% standard-efficiency and 90%+ condensing models, upflow, downflow, and horizontal, in single-stage, two-stage, and variable-speed versions.
Central air conditioners — York, Coleman, and Luxaire condensers with matched indoor coils, including multi-stage units.
Heat pumps — split systems for the growing number of Bay Area homes moving toward all-electric heating and cooling.
Packaged units — the all-in-one gas/electric and heat pump packages on roofs and side-yard slabs, a Coleman staple on production housing.

Common York problems we fix

Red flash-code lockouts. Seven red flashes is an ignition lockout — three failed tries, no flame proven, burners off. Usually a weak igniter, a dirty flame sensor, or a gas-supply issue. Three red flashes means the pressure switch won't close, so the burners never light at all.
Pressure-switch and venting faults. Behind a 3-flash code is almost always a real restriction: a tired draft inducer, a blocked flue or intake, or a condensate line backing up on a high-efficiency unit. Replacing the switch without finding the restriction buys a few weeks.
Igniter and flame-sensor failures. An igniter is a wear part and eventually cracks; a flame sensor oxidizes until the board can't read the microamps and drops the burners seconds after they light.
Restricted-airflow warnings. Four amber flashes flags restricted circulating (indoor) air — a loaded filter, blocked returns, or crushed flex duct. Left alone it pushes the furnace into limit trips.
AC pressure-switch lockouts. The outdoor board locks out on pressure: FC3 / FC4 for high pressure (dirty condenser coil, failed outdoor fan, overcharge), FC5 / FC6 for low pressure (a leak or a restriction). Both are protection trips, not the root cause.
Capacitor and contactor failures. The classic summer no-cool: the outdoor fan hums but won't spin, or a pitted contactor won't pull in. Blower motors, control boards, and refrigerant leaks on older splits round out the list.

York error & fault codes

Here's the detail most homeowners miss: on York, the LED color changes the meaning. The board behind the blower door uses red for faults, amber for airflow and venting conditions, green for normal states. Count the flashes and note the color, or you'll read the wrong chart — four amber (restricted indoor air) is a warning, seven red (ignition lockout) is a hard no-heat fault. The ones we're called for most:

7 red — ignition lockout. No flame proven after three tries: igniter, flame sensor, or gas supply.
3 red — pressure switch won't close. Inducer, venting, or condensate.
6 red — pressure switch opened repeatedly, ending in a one-hour lockout.
4 amber — restricted circulating air. Start at the filter.
Green — normal operating states, not a fault.

Two cautions: the higher-numbered codes differ between UTEC boards and older White-Rodgers-style boards, and York's E, F, and P codes belong to ductless and PTAC equipment, not gas furnaces. Confirm against the label inside your own blower compartment.

York Furnace Error Codes (Red & Amber Flash Guide) — the full red and amber tables and which codes are DIY-safe.

What it costs in the Bay Area

York repairs come down to the part. On the furnace side, a flame sensor runs about $90–$250 and a hot-surface igniter $120–$350 — the two fixes behind most 7-flash lockouts — while a blower motor is roughly $400–$700 and a control board $200–$600; most furnace repairs land in the $129–$800 range. On the AC side, a capacitor is about $120–$350 and a contactor $120–$320, a refrigerant leak repair and recharge $180–$650, and a compressor the high end at $900–$1,600, with most AC repairs in the $129–$1,200 range. We charge a diagnostic fee that's credited toward the repair when you approve the work, and you get a firm, flat price first.

Book York, Coleman & Luxaire service

Triton services York, Coleman, Luxaire, and Fraser-Johnston furnaces, air conditioners, heat pumps, and packaged units — plus every other major brand — across the East Bay, Tri-Valley, and Peninsula, including Hayward, Redwood City, Pleasanton, San Mateo, and San Ramon. Same-week and often same-day appointments, licensed techs, and upfront pricing.

Book online or call (888) 993-5699.

HVAC Repair in the SF Bay Area — our full heating & cooling hub
York Furnace Error Codes — the red & amber flash guide
Furnace Not Heating / No Heat — the symptom behind most flash codes
Furnace Won't Ignite — the 7-flash ignition lockout, from the homeowner's side
AC Not Cooling / Blowing Warm Air — the summer no-cool
HVAC & AC Repair in Hayward — East Bay service area
HVAC & AC Repair in Redwood City — Peninsula service area

Frequently asked questions

Are York, Coleman, Luxaire, and Fraser-Johnston the same? Effectively yes. All four are Johnson Controls Unitary Products brands built on shared platforms, using the same UTEC and Simplicity control boards, the same flash codes, and many of the same parts. The badge changes; the troubleshooting doesn't. That's why we treat them as one brand family.

What does 7 red flashes mean on my York furnace? Seven red flashes is an ignition lockout: the furnace tried to light three times, never proved flame, and shut itself down. The usual causes are a weak or cracked hot-surface igniter, a flame sensor too oxidized for the board to read, or a gas-supply or gas-valve problem. You can cycle power once to clear the lockout, but if it locks out again it needs a tech rather than repeated resets.

Why does the LED color matter on a York? Because the color selects the chart. Red flashes are faults, amber flashes are airflow and venting conditions, and green indicates normal operating states. Four amber is restricted indoor airflow, while four red would mean something else entirely — counting flashes without noting the color is the most common way homeowners misdiagnose these furnaces.

What do FC3, FC4, FC5, and FC6 mean on my York AC? They're pressure-switch lockouts on the outdoor control. FC3 and FC4 indicate high pressure — typically a dirty condenser coil, a failed outdoor fan, or an overcharge. FC5 and FC6 indicate low pressure, typically a leak or a restriction. All four are the system protecting itself, so the fix is finding the underlying cause rather than resetting the board.

How much does York furnace or AC repair cost in the Bay Area? It depends on the part. A flame sensor is about $90–$250 and an igniter $120–$350; a blower motor runs $400–$700 and a control board $200–$600, with most furnace repairs in the $129–$800 range. On the AC side a capacitor is $120–$350, a contactor $120–$320, a refrigerant leak repair and recharge $180–$650, and a compressor $900–$1,600. The diagnostic fee is credited toward the repair when you approve the work.

Do you service York in my city? We cover the East Bay, Tri-Valley, and Peninsula — including Hayward, Redwood City, Pleasanton, San Mateo, and San Ramon — with same-week and often same-day appointments. Call (888) 993-5699 to book.

York & Coleman HVAC Repair

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