What does Bunn Fill Time Too Long mean?

On AXIOM digital brewers, the control board monitors how long the inlet (refill) valve runs to fill the hot tank. If the water level probe does not sense a full tank within the allowed window, the display reports Fill Time Too Long and stops the refill.

What does Bunn Heating Time Too Long mean?

On AXIOM digital brewers, the control board tracks how long the tank heaters run to bring the water up to brewing temperature. If the water does not reach the ready temperature within the allowed time, the display reports Heating Time Too Long and shuts the brewer down.

What does Bunn Temperature Too Low mean?

On AXIOM digital brewers, Temperature Too Low means the water temperature in the tank does not meet the ready temperature. With the brew lockout feature enabled, the brewer will not start a brew cycle until the tank reaches the programmed temperature.

How do I maintain a Bunn unit?

Follow the Bunn recommended maintenance schedule: daily cleaning of accessible surfaces, weekly inspection of seals and gaskets, monthly check of electrical connections and water filters, and annual professional service including calibration and safety checks.

Where can I find Bunn parts and documentation?

Genuine Bunn replacement parts and service documentation are available through authorised dealers. For instant answers about Bunn troubleshooting and maintenance, use AskWhiz on WhatsApp.

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What error codes does Bunn display?

Fill Time Too Long

Tank refill timed out — the brewer could not fill the tank within the allowed time and shut down.

Heating Time Too Long

The tank water failed to reach the ready temperature within the allowed time, so the brewer shut down.

Temperature Too Low

Tank water is below the ready temperature, so brewing is locked out until it heats up.

Temp Sensor Out Of Range, Check For Bad Connections

The temperature sensor circuit reads open — the probe or its wiring is disconnected.

Temp Sensor Out Of Range, Check Wire For Shorts

The temperature sensor circuit reads shorted — the sensor wiring is shorted.

WARNING INACCURATE FLOW - TOO MUCH LIME PLEASE REPAIR

The brewer detected inaccurate water flow caused by heavy lime buildup and is asking for descaling/repair.

WARNING VERY LOW FLOW - PLEASE REPAIR

The brewer detected very low water flow caused by lime buildup and is asking for descaling/repair.

CHECK SPRAYHEAD FOR LIME - CHECK FITTINGS FOR LIME

Maintenance message prompting the operator to delime the sprayhead, valve, and tank.

Common questions about Bunn equipment

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