- HVAC
- Pellet stoves
E108
Palazzetti E108 on pellet stove: pressure or thermal safety
Risk level
High
Professional inspection is recommended.
Urgency
High
Quick answer
E108 identifies a pressure or thermal safety error. Keep the stove out of use and contact authorised service: flues, seals, combustion air and possible hopper overheating need checking before any reset.
Safety first
Stop and check this first
- For E108, combustion, flue, air intake, internal component and electrical supply work belongs to qualified service; do not clean the hot stove or switch it off by unplugging it while operating.
- Do not restart after E108 until a technician has checked the stove; the rear thermostat is not a user adjustment, and you must never bypass it or disable the pressure switch or another protection.
Safe checks you can perform
- Read the safety alarm code
- Wait for cooling before checking door closure
- Check the firebox and hopper doors
Leave these tasks to a qualified professional
- Do not attempt this professional task: Inspect and clean the fumes circuit and its seals
- Do not attempt this professional task: Check the air supply and pellet hopper
- Do not attempt this professional task: Restore safety only after the authorised inspection
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Inspect and clean the fumes circuit and its seals
What they doThe authorised service centre works with the stove cold, ashes extinguished and power isolated. It checks and cleans the fumes circuit, verifies the condition and tightness of the seals, and checks the cleanliness and tightness of the flue connection.
They must show youthe condition found in the fumes circuit, seals and exhaust connection.
In writingdirt or wear found and the cleaning and tightness checks performed for E108.
Check the air supply and pellet hopper
What they doThe professional checks that the air intake arrangement suits the installation and examines the condition and cleanliness of internal components and the hopper. They relate the inspection to the documented insufficient combustion air and hopper overheating possibilities, without assigning a failed part from E108 alone.
They must show youthe air intake arrangement and findings from the internal and hopper inspection.
In writingresults of checks relating to insufficient air and overheating in this E108 case.
Restore safety only after the authorised inspection
What they doAuthorised service checks the E108 cause before performing the rear thermostat reset specified in the manual. Before operating the stove, it reinstalls all protections, reactivates the safety devices and verifies operation; if any safety device is not working or calibrated, the stove remains out of service.
They must show youthe inspection before resetting and the protections restored before checking operation.
In writingcause investigated, intervention on the E108 alarm and outcome of the operation check.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Read the safety alarm code
- Who:
- you, using only the stove panel's code display function.
- How:
- press and hold the cancel button to display the error code and tell authorised service whether E108 appears; reading it is not a reason to reset the stove.
- Result that matters:
- identify the pressure or thermal safety reference requiring inspection.
- If the display confirms E108, keep the stove out of use until its technical inspection.
- If the panel shows another warning, relay its exact reference for review according to that message.
- Evidence to keep:
- E108 reference read using the cancel button.
Evidence: Manual de instalación y mantenimiento / Installation and Maintenance Manual (004777780) · Manual de usuario de pantalla / Control Panel User Manual (004777760)
Wait for cooling before checking door closure
- Who:
- you, without touching a door or surface that remains hot.
- How:
- allow the stove and ashes to cool completely before approaching the door check; the manual prohibits cleaning during operation and touching the door while hot.
- Result that matters:
- respect the stove cooling prerequisite after E108.
- If the structure or ashes are still hot, wait without cleaning or opening the firebox.
- If the stove is cold, limit your next check to accessible door closure and leave maintenance to the technician.
- Evidence to keep:
- cooling condition before checking the doors following E108.
Evidence: Manual de instalación y mantenimiento / Installation and Maintenance Manual (004777780) · Manual de usuario de pantalla / Control Panel User Manual (004777760)
Check the firebox and hopper doors
- Who:
- you, with the stove switched off and completely cold after the alarm.
- How:
- check that the firebox and hopper doors are perfectly closed, as required in the manual's checklist; do not handle seals, sensors or ducts to try to clear E108.
- Result that matters:
- report closure condition without treating it as permission to restart.
- If a door was open, close it and tell the technician about that observation before any startup.
- If both doors were closed, report this and keep the pressure and thermal safety inspection pending.
- Evidence to keep:
- firebox and hopper door condition when checking the E108 warning.
Evidence: Manual de instalación y mantenimiento / Installation and Maintenance Manual (004777780) · Manual de usuario de pantalla / Control Panel User Manual (004777760)
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- HVAC
- Brand
- Palazzetti
- Product type
- Pellet stoves
Known code variants
- E108
- Error de presión o dispositivo de seguridad térmica
- Pressure error or thermal safety
What it means
In Alarm management of Palazzetti control panel manual 004777760, for pellet stoves using that panel, E108 means Pressure error or thermal safety. The listed possibilities are a dirty flue gas exhaust system, worn seals, insufficient combustion air and pellet hopper overheating. The E108 indication does not by itself prove that a particular component has failed, and its interpretation can differ on other models. The manual assigns resetting the rear thermostat to an authorised technician.
Warnings and stop conditions
- Highsource verified
For E108, combustion, flue, air intake, internal component and electrical supply work belongs to qualified service; do not clean the hot stove or switch it off by unplugging it while operating.
Evidence: Manual de instalación y mantenimiento / Installation and Maintenance Manual (004777780)
- Highsource verified
Do not restart after E108 until a technician has checked the stove; the rear thermostat is not a user adjustment, and you must never bypass it or disable the pressure switch or another protection.
Evidence: Manual de instalación y mantenimiento / Installation and Maintenance Manual (004777780) · Manual de usuario de pantalla / Control Panel User Manual (004777760)
Symptoms and causes
Probable causes · in order
- Dirty flue gas exhaust systemPossible
The E108 table lists dirt in the flue gas exhaust system among the possible origins of this pressure or thermal safety error.
Evidence: Manual de usuario de pantalla / Control Panel User Manual (004777760)
- Worn seal gasketsPossible
Worn sealing gaskets are a documented possibility for E108 and require a technician to check their condition and tightness.
Evidence: Manual de instalación y mantenimiento / Installation and Maintenance Manual (004777780) · Manual de usuario de pantalla / Control Panel User Manual (004777760)
- Insufficient combustion airPossible
An insufficient supply of air for combustion appears explicitly among the possible causes of E108 on this control panel.
Evidence: Manual de usuario de pantalla / Control Panel User Manual (004777760)
- Pellet hopper overheatingPossible
The manual associates E108 with overheating problems in the pellet hopper without identifying a particular failed component from the code.
Evidence: Manual de usuario de pantalla / Control Panel User Manual (004777760)
Virtual technician
Does E108 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Manual de instalación y mantenimiento / Installation and Maintenance Manual (004777780)
Palazzetti · 2026 · official_doc
- 2
Manual de usuario de pantalla / Control Panel User Manual (004777760)
Palazzetti · 2026 · official_doc
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