Bunn CHECK SPRAYHEAD FOR LIME - CHECK FITTINGS FOR LIME Error Code

What does Bunn CHECK SPRAYHEAD FOR LIME - CHECK FITTINGS FOR LIME mean?

On AXIOM digital brewers, this diagnostic message prompts the operator to check the sprayhead and fittings for lime. It is the brewer's early scale-maintenance reminder: lime is accumulating in the water path and should be cleaned before it degrades flow. The same probable causes and remedies apply as the more severe low-flow warnings, but at an earlier stage where simple deliming resolves it.

Symptoms

• Display reads "CHECK SPRAYHEAD FOR LIME" / "CHECK FITTINGS FOR LIME"
• Lime/scale visible on the sprayhead or fittings
• Early sign of flow restriction in hard-water areas
• Brew quality may begin to drift if ignored

Common causes

• Lime buildup in the sprayhead
• Lime buildup in the brew valve
• Lime buildup in the brew tank

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Diagnostic steps

1. Clean the sprayhead

   Remove and delime the sprayhead, the first listed cause, so all of its holes are clear and unobstructed.

2. Clean the brew valve

   Clean the brew valve to remove lime accumulating in the water path before it restricts flow.

3. Clean the brew tank

   Delime the brew tank with a deliming agent to remove scale that builds up over time.

4. Resume normal use

   After deliming the sprayhead, valve, and tank, confirm the reminder clears and keep to a regular descaling schedule, especially with hard water.

When to call a professional

This is a routine maintenance reminder that operators can usually resolve by deliming the sprayhead, valve, and tank, so service is rarely needed at this stage. Call a Bunn Authorized Service Representative only if the message keeps returning quickly despite proper descaling, which can indicate poor water quality or a component beginning to fail — addressing those underlying issues may require qualified service and water-treatment evaluation.