Posts
All the articles I've posted.
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Fanuc Alarm 430 — Servo Motor Overheat Fix
Fanuc Alarm 430 (Servo Motor Overheat, with axis name) means the thermistor inside the named servo motor's stator winding exceeded the trip threshold —...
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Fanuc vs Mazak CNC Controls — A Machinist's Honest Comparison (2026)
If your shop runs job-shop work with frequent program changes, varied materials, and operators with mixed experience levels, buy a Mazak — the SMOOTH...
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Frigidaire Dishwasher Error Code i30 — Water in Base Fix
Frigidaire dishwasher error i30 (also displayed as "30" or "iE30" on some models) means the anti-flood float switch at the bottom of the base pan has...
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Frigidaire Refrigerator Error Code SY EF — Evap Fan Fix
Frigidaire (and its parent Electrolux's appliances under the Frigidaire badge) display error "SY EF" when the main control board detects that the freezer...
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Fujitsu Mini Split 11:4 Error Code — Indoor Unit Communication Timeout Fix
Fujitsu 11:4 means the outdoor PCB stopped receiving valid communication frames from the indoor unit within the firmware timeout. It's almost always wiring...
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Fujitsu Mini Split 14:1 Error Code — High Pressure Fix
Fujitsu 14:1 means the outdoor high-pressure switch opened — head pressure climbed past the trip point (around 580-620 PSI on R-410A platforms) and the...
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Fujitsu Mini Split 15:1 Error Code — Low Pressure Fix
Fujitsu 15:1 means the suction-side low-pressure switch opened — suction pressure dropped below the trip threshold (around 25-30 PSI on R-410A platforms)...
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Garland Char-Broiler Error Code — Safety Lockout Fix
Garland commercial char-broilers display "SAFE" or "PILOT" lockout (on electronic-ignition models) or simply fail to light (on standing-pilot models) when...
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GE Dishwasher Error Code LC — Leak Detected Fix
GE dishwasher error LC means the leak-detection sensor at the bottom of the cabinet (a small float switch in the base pan or, on newer Profile models, a...
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GE Refrigerator Error Code Er — Diagnostic Guide
GE Profile, Cafe, and Monogram refrigerators show "Er" on the dispenser display when the main board has lost communication with one of its sensor inputs —...
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GE Washer Error Code E1 — Front-Load Inlet Fix
GE front-load washer error E1 (sometimes paired with E2 on some models) means the control board started a fill cycle but didn't see the tub reach target...
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Goodman Heat Pump 2-Flash — Low Pressure Fix
A 2-flash code on a Goodman heat pump (GSZ, GSZC, DSZC platforms with diagnostic LEDs on the outdoor control board) indicates the low-pressure switch opened...
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Goodman vs Bryant Furnaces — A Service Tech's Honest Comparison (2026)
Buy a Bryant if you're staying in the house 10+ years and want a furnace that ages gracefully — the build quality and service network reward long-term...
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Haas Alarm 219 — X-Axis Servo Error Fix
Haas Alarm 219 (X-Axis Servo Error) on NGC machines is the X-axis-specific servo position-loop fault — distinct from the generic Alarm 114 (Servo Error Too...
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Heatcraft Beacon II E1 Error Code — Sensor Fault Fix
Heatcraft Beacon II E1 means the controller can't read one of its connected temperature sensors — open, shorted, or wildly out of range. It's almost always...
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Heil 3-Flash Error Code — Pressure Switch Fix (Tempstar / Comfortmaker)
A 3-flash error on a Heil, Tempstar, or Comfortmaker furnace means the integrated control did not see the pressure switch close after the inducer (draft...
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Hobart AM15 Error 1-1 — Wash Motor Overload Fix
Hobart AM15 Error 1-1 means the wash pump motor drew current past the overload trip during a wash cycle — the motor is binding, the impeller is jammed, or...
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Hoshizaki vs Manitowoc Ice Machines — A Commercial Tech's Honest Comparison (2026)
For most restaurant and bar operators, Hoshizaki delivers lower total cost of ownership over a 10-year service life — the auger/evap module on a cuber ages...
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Jackson Conserver Series Error 1 — Low Water Fix
Jackson Conserver Series Error 1 means the wash tank didn't fill to the proper water level within the timeout window — the float switch never satisfied or...
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Kelvinator Commercial Walk-In Controller Fault Codes
Kelvinator commercial walk-in controllers (KCS and KCD product lines, manufactured under the Heatcraft / Lennox umbrella since the brand consolidation) use...
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Lennox Error Code 224 — HSI Relay Failure Fix
Lennox error code 224 — displayed on the alphanumeric LED of G24M, G50, G60, SLP98V, EL296V, and similar Lennox boards — means the control's HSI (hot...
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Lennox Error Code 270 — Flame Signal Lost Fix
Lennox error 270 — on G24M, G50, G60, SLP98V, EL296V boards — means the burners initially lit (flame established and the board confirmed it) but then the...
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LG Dishwasher Error IE — Water Inlet Fix
LG dishwasher error IE means the control board started a wash cycle and opened the water inlet valve, but didn't see the sump fill to the correct level...
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LG Refrigerator Error ER RF — Evap Fan Motor Fix
LG error code "ER rF" (sometimes shown as "Er rF" or simply "rF" on older models) means the freezer evaporator fan motor isn't sending its expected RPM...