


AGA is a premium British cooking brand known for cast‑iron ranges, radiant heat, and distinctive multi‑oven designs. In NYC homes, AGA units often serve as the centerpiece of the kitchen and see daily, high‑heat use. While the construction is robust, heavy thermal cycles, older installations, and ventilation constraints can introduce issues over time. This guide summarizes the most common AGA symptoms, provides error/alert patterns seen in modern control modules, and explains practical DIY checks vs. when to call a qualified technician. Our goals: speed up diagnosis, prevent unnecessary parts replacement, and extend service life. You’ll find frequent faults, 25+ fault indicators, technical notes (sensors, thermostats, relays), quick fixes, and decision points for repair vs. replacement.
AGA Range Error F1 – oven temperature sensor (RTD) open circuit
AGA Range Error F2 – oven over-temperature detected (runaway heat)
AGA Range Error F3 – temperature sensor shorted
AGA Range Error F4 – temperature sensor out of range
AGA Cooker – burner ignition failure (spark electrode)
AGA Cooker – gas valve sticking, delayed ignition
AGA Oven – convection/cooling fan not running
AGA Oven – broil/bake element open
AGA Dual Fuel – relay board stuck after surge
AGA Range – thermostat calibration drift (°F off target)
AGA Range – door lock not engaging after self-clean
AGA Cooker – simmer control module fault
AGA Hob – ignition module failure (no spark)
AGA Hob – knob/shaft fracture from heat
AGA Hood – blower motor noisy/failing
AGA Oven – door hinge spring failure
AGA Cooktop – flame spreader warped / uneven flame
AGA Range – enamel/glass cracking from heat stress
AGA Range – thermal cutoff open (high-limit)
AGA Oven – cooling airflow blocked (insulation sag)
AGA Cooker – wiring scorch at terminal block
AGA Range – spark igniter ceramic cracked
AGA Range – gas pressure/air mixture improperly set
AGA Warming drawer – element open, no heat
Q: Why does my AGA preheat slowly?A: Check ventilation, door gasket seal, and power/gas supply stability; relays and probes may need calibration.Q: My burners click but won’t light—what now?A: Dry spills, clean/realign electrode and caps; if still failing, the spark module or gas flow needs service.Q: Is self‑clean safe to use often?A: Excess heat can stress components; periodic professional cleaning is safer for longevity.
Repair is typically favored: thermostats, probes, relays, fans, and igniters are replaceable at far lower cost than a new AGA range. Replacement makes sense only for severe structural damage (warped cavities), repeated board failures from environmental heat, or when a major upgrade is desired. Most performance issues respond well to calibrated repair.
AGA modern ranges couple traditional cast‑iron mass with electronic control: oven probe (NTC), high‑temp thermostat, solid‑state relays or contactors, convection/cooling fans, and ignition modules. Persistent high heat causes sensor drift and relay wear. Probe resistance typically measures ~1 kΩ–1.1 kΩ at 25 °C for some NTC families (check spec), increasing with temperature; out‑of‑range values trigger E01/E11/E18.Ignition systems require correct electrode gap and strong ground. Weak flame sense (E13) often traces to a dirty or cracked electrode. Fan monitoring may use tach feedback; stalled fans raise E07/E19 and drive over‑temp (E02). Control boards can develop hot‑spot solder fractures near power components. Door interlocks and locks must read closed for bake/broil cycles; self‑clean lock motors can fail (E16). Thermal fuses protect wiring paths and should test continuity when cool.
Call a pro for gas leaks/odor, repeated ignition failures, tripped thermal fuses, fan motor replacements, control board faults, or any E‑codes that return after resets. Professionals verify gas pressure, perform leak checks, calibrate sensors, and test relays under load. DIY on gas systems risks fire or CO exposure; high‑heat electrical work also warrants proper tools and procedures.
See the full catalog of our services—organized by brand and by appliance—right here.