Hestan smart rangetop
showing ER05
ER05 on a Hestan Smart Burner means the burner could not be lit after several re-ignition attempts, so the cooking cycle ended.
Mon–Sat, 8am–8pm
- Burners and ignition
- Burner and igniter repair
- Source: Hestan
Book a visit
Three short steps, about a minute.
or call (844) 252-4077
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What ER05
actually means.
ER05 on a Hestan Smart Burner means the burner could not be lit after several re-ignition attempts, so the cooking cycle ended. Hestan names dirty or blocked burner ports and a faulty igniter as causes.
Hestan cooktop display
What to do when ER05 shows on the cooktopKind of codeBurners and ignition
A burner was turned to light and the cooktop never sensed a flame, or the spark carried on after the flame caught. A damp or greasy electrode and a cap resting off its base are ruled out before the spark module, a knob switch or the valve is changed. Gas in the air matters more than any code: leave the house and call the gas utility once outside.
Usually leads toBurner and igniter repair
Gas cooktop and rangetop burners that will not light, light late or burn with a ragged flame, traced to the electrode, the burner head, the cap or the ports.
Shows up asCooktop Burner Won't Light
The igniter clicks but the gas never catches, the burner lights only after several tries, or nothing happens at all when the knob is turned.
MakeHestan
A California maker of pro-style gas cooking, with rangetops for the home kitchen.
SourceHestan KRT and KRTS rangetop use and care manual, Smart Burner error codes
Hestan KRTS smart rangetop, Smart Burner only; the KRTS is not in Hestan's 2026 indoor catalog. KRT rangetops without the Smart Burner show no ER codes.
Before you book,
in this order.
Each step comes from Hestan's own guidance for ER05 on its cooktops. Follow it to the end: the last card says whether this is a visit.
Turn the burner off and let it cool.
Clean the burner ports and the igniter.
Try again; if ER05 repeats, book a visit for the igniter.
Still there?
It usually turns into burner and igniter repair. Book with the code and the model number.
What not to do
ER05 is not a pan or Bluetooth problem. It means the burner could not be lit after several re-ignition attempts.
What you may
notice with it.
The cooktop problems ER05 tends to arrive with. Answer these at the cooktop before anyone is booked.
All problems
Where ER05 usually leads
Burner and igniter repair.
Hestan
cooktops.
A California maker of pro-style gas cooking, with rangetops for the home kitchen.
Hestan cooktop repair
Induction cooktop
A glass cooktop in the counter that heats the pan itself through magnetic coils, run by power boards and cooled by a fan underneath.
Rangetop
A pro-style gas cooking top with its knobs across the front, set into a notch above a base cabinet, often with a griddle or char-broiler beside the burners.
In Hestan's own words
ER05 - Ignition error.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Hestan KRTS smart rangetop, Smart Burner only; the KRTS is not in Hestan's 2026 indoor catalog. KRT rangetops without the Smart Burner show no ER codes.
Hestan ER05 cooktop repair,
where we come out.
The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about ER05.
Can I clear ER05 myself?
What should I clean when my Hestan shows ER05?
Does ER05 mean I smell gas?
Why does a Hestan KRTS Smart Burner stop trying to light and show ER05?
Back to your everyday
Still showing ER05?
Book with the code copied exactly, the full model number, and whether there is any smell of gas or burning — with a code in hand, that is where the diagnosis starts.