Ariston boiler service mode

ACO 27 MFFI / ACO 32 MFFI / ACO 27 RFFI SYSTEM / ACO 32 RFFI SYSTEM

Covers: ACO 32 MFFI

GC 47-116-35

Entering Test Function / Manual Rate Control

1. To select operation at maximum power, press the RESET key for 5 seconds and press the programming keys + and - together (flue sweep function) or enter the test function via the adjustments menu and press the programming key +, where two dashes will appear at the top of the right-hand display.
2. To select operation at minimum power, press the RESET key for 5 seconds and press the programming key -, or select test function via the adjustments menu and press the programming key -, where two dashes will appear at the bottom of the right-hand display.
3. To force the boiler to maximum output for hot water, press the reset key for 5 seconds to enter test mode (t--) and press the + and - keys together, where two dashes appear at the top of the right-hand display.
4. To quit the adjustments menu and disable the test mode, press the reset key.

From manual 099841832211, page 32.

Clas HE Evo / Clas HE Evo System (manual 420010439400)

Covers: Clas HE Evo

GC 41-116-36, 41-116-37, 41-116-38, 41-116-41, 41-116-42, 41-116-43, 47-116-65, 47-116-66, 47-116-67, 47-116-73, 47-116-74, 47-116-75

Activate Combustion Test Function (Force Rate)

1. Press the mode selector to ensure the + icon is displayed
2. Press & hold the RESET button for 10 seconds
3. 'Test' will appear on the screen
4. Ensure the boiler is on max power by rotating the encoder
5. On the display, the flame + bars icon appears, meaning the boiler is forced to maximum heating power
6. Rotate the encoder to force the boiler to maximum DHW power; on the display the tap icon appears

From manual 420010439400, page 35.

Exit Test Mode

1. Test function is automatically deactivated after 10 minutes
2. Alternatively, manually exit by briefly pressing the RESET button

From manual 420010439400, page 35.

The gas valve is factory set and should only be adjusted if the measured CO2 values at maximum or minimum flow rates are outside the specified tolerances. (page 35)

CLAS HE EVO / CLAS HE EVO SYSTEM (manual 420010620100)

Covers: Clas HE 24, Clas HE 28, Clas HE 35

GC 41-116-32, 41-116-41, 41-116-42, 41-116-43, 47-116-73, 47-116-74, 47-116-75

Enter Test (Service) Mode

1. Press the mode selector to ensure the + icon and bars icon are displayed.
2. Press and hold the RESET button for 10 seconds.
3. 'Test' will appear on the screen.

From manual 420010620100, page 34.

Force Max/Min Rate

1. Press the mode selector button to ensure the + icon (flame and bars) is displayed.
2. Press and hold the reset button for 10 seconds; 'TEST' appears on the display and the boiler is forced to maximum heating power (flame and bars icon shown).
3. Rotate the encoder knob to force the boiler to maximum DHW power; the display shows the tap icon.
4. Wait 1 minute for the boiler to stabilise before carrying out combustion analyses.

From manual 420010620100, page 34.

Exit Service Mode

1. The Test function is automatically deactivated after 10 minutes or manually by briefly pressing the RESET button.

From manual 420010620100, page 34.

CO₂ and CO from manual 420010620100, page 22, 34. Check against the data badge.

The gas valve is factory set and should only be adjusted if the CO2 values measured differ from those in the table. Adjustments are sensitive: 1 turn adjusts CO2 by approx 0.2%. (page 34)

CLAS HE R 12 - 18 - 24

Covers: Clas HE R 12, Clas HE R 18

GC 41-116-30, 41-116-31

Activate Test Function (Force Max / Min Rate)

1. Press the Reset button for 5 seconds to activate the test function (boiler switches to maximum heating power).
2. To select maximum domestic hot water, press the + button.
3. To select minimum domestic hot water or minimum power, press the - button.
4. The function is automatically deactivated after 10 minutes or by pressing the Reset button.

From manual 420010128500, page 39.

Accessing Menus and Entering Service Code

1. Press the Menu/Ok button; the first figure 000 will flash on the display.
2. Press the + or - buttons to select a menu (e.g. 200).
3. Press the Menu/Ok button; the second figures on the display will flash.
4. Press the Menu/Ok button; 222 will appear on the display unit.
5. Press the + or - buttons to select code 234.
6. Press the Menu/Ok button to select the sub menu.

From manual 420010128500, page 42.

CO₂ and CO from manual 420010128500, page 9, 39. Check against the data badge.

Replacement Gas Valves are not factory set and will need to be set up (page 59)

CLAS HE SYSTEM - Gas fired condensing wall hung combination boilers

Covers: Clas HE 24 System, Clas HE System 30

GC 41-116-22, 41-116-23

Test Function and Combustion Analysis (Test Mode / Pigging Function)

1. Activate the cleaning function by pressing the Reset button for 5 seconds; the boiler switches to maximum heating power.
2. To select the test function at maximum domestic hot water, press the + button.
3. To select the function at minimum domestic hot water, press the - button.
4. Activate the cleaning function at minimum power in either heating or domestic hot water production for minimum gas flow combustion analysis.
5. The function is automatically deactivated after 10 minutes or by pressing the Reset button.
6. The appliance can be forced to minimum or maximum power from menu 7 (see the section on the display - setting - diagnostics menu).

From manual 420010097205, page 32.

CO₂ and CO from manual 420010097205, page 8, 32. Check against the data badge.

Replacement Gas Valves are not factory set and will need to be set up (page )

CLAS NET ONE / CLAS ONE / CLAS SYSTEM ONE

Covers: Clas Net One

GC 33-010-50, 41-116-49, 41-116-50, 41-116-51, 47-116-85, 47-116-86, 47-116-87

Entering Service / Test Mode & Combustion Analysis

1. Press the mode selector to ensure the heating icons are displayed.
2. Press & hold the reset button for 10 seconds. 'TEST' will appear on the screen.
3. Ensure the boiler is on max power by pressing the 2 (+) button.
4. On the display 'TEST' and the heating power icon appear; the boiler is forced to maximum heating power.
5. Press the 2 (+) button to force the boiler to maximum DHW power; the display shows the DHW icon.
6. Wait 1 minute for the boiler to stabilise before carrying out combustion analyses.
7. With the Test function active, press the 2 (-) button to select the icons for minimum power; the boiler is forced to minimum power.
8. Wait 1 minute for the boiler to stabilise before carrying out combustion analyses.
9. The Test function is automatically deactivated after 10 minutes or manually by briefly pressing the RESET button.

From manual 420010818500, page 35.

CO₂ and CO from manual 420010818500, page 35. Check against the data badge.

Adjust the gas valve by turning setting screw 4 clockwise in increments to reduce the CO2 level (a 1 turn adjusts the CO2 level by approximately 0.2%). Wait 1 minute after each change in setting for the CO2 value to stabilise. (page )

Combi A 24 MFFi / Combi A 30 MFFi

Covers: Combi A 24 MFFI Combi, Combi A 30 MFFI

GC 47-116-44, 47-116-45

Entering Service Mode (Combustion Rate Control)

1. Access the setting menu by pressing the + and - keys for 5 seconds; the flame icon will be shown in the display.
2. Press the menu button four times to access Menu 5.
3. Press the setting button (wrench icon) once to switch the output of the boiler to maximum (two digits flashing indicating the temperature; cursor at top indicates max output).

From manual 420010028000, page 29.

Forcing Maximum and Minimum Rate

1. Access the setting menu by pressing the + and - keys together for 5 seconds (the icon will be shown in the display).
2. Press the menu button four times to access Menu 5.
3. Press the setting button once to switch the output of the boiler to maximum.
4. Press the setting button once to set the combustion control rate mode to minimum.
5. Press the setting button again to set the combustion rate control mode to maximum.

From manual 420010028000, page 29.

The gas valve settings will need to be adjusted (see Section 14.3 page 28) (page 45)

E-SYSTEM ONE

Covers: E-Combi One 30, E-System ONE

GC 33-011-32, 41-116-47, 41-116-48, 47-116-84

Enter Service Test Function

1. Press the mode selector to ensure the icons are displayed.
2. Press and hold the RESET button for 10 seconds; 'TEST' will appear on the screen.
3. Ensure the boiler is on max power by pressing the 2 (+) button.
4. The display shows TEST and the icon, indicating the boiler is forced to the maximum heating power.

From manual 420020162200, page 35.

Force Rate Adjustment (Test Mode)

1. Press the mode selector to ensure the icon is displayed
2. Press & hold the reset button for 10 seconds; 'TEST' appears on the screen; ensure the boiler is on max power by pressing the 2 (+) button
3. The display shows 'TEST' and the icon; the boiler is forced to maximum heating power
4. Press the 2 (+) button to force the boiler to maximum DHW power; the display shows the tap icon
5. Wait 1 minute for the boiler to stabilise before carrying out the combustion analyses
6. To check minimum gas flow, with the Test function active, press the 2 (-) button to select the icon and the tap icon; the boiler is forced to minimum power
7. Wait 1 minute for the boiler to stabilise before carrying out the combustion analyses

From manual 420020162200, page 35.

Exit Service Mode

1. The Test function is automatically deactivated after 10 minutes.
2. Manually exit by briefly pressing the RESET button.

From manual 420020162200, page 35.

CO₂ and CO from manual 420020162200, page 68. Check against the data badge.

The gas valve is factory set and should only be adjusted if the CO2 values measured are outside the specified limits. (page 35)

EGIS HE

Covers: Egis HE 24, Egis HE 30

GC 47-116-71, 47-116-72

Enter Service Mode (Cleaning Function)

1. Draw off the domestic hot water at the maximum water flow rate.
2. Select the Cleaning function by pressing the RESET button for 10 seconds.
3. Warning: When the cleaning function is activated, the temperature of the water coming out of the boiler may be more than 65°C.
4. The following icon appears on the display (gas boiler activated at C.H. maximum power).
5. Press the +/wrench button to select the icon for D.H.W. maximum power.
6. Wait 1 minute for the boiler to stabilise before carrying out the combustion analyses.

From the installation and servicing manual, page 31.

Force Max & Min Rate

1. Enter the Cleaning function by pressing the RESET button for 10 seconds
2. The display automatically shows the icon for gas boiler activated at C.H. maximum power
3. Press the + wrench button to select the icon for D.H.W. maximum power

From the installation and servicing manual, page 31.

CO₂ and CO from the installation and servicing manual, page 31. Check against the data badge.

Eurocombi A/23 MFFI - A/27 MFFI

Covers: Eurocombi A/27 MFFI

GC 47-116-12

Entering Flue Analysis Mode (Service Mode for Combustion Testing)

1. Turn the selector knob C to the flue analysis setting / flue test setting.

From manual B023 / B029, page 20.

Forcing Maximum Rate

1. Turn the selector knob C to the flue analysis setting to test under the best maximum-power test conditions for the heating system.
2. To set maximum power for gas pressure checks, turn on the hot water tap and allow it to run at a rate of about 8 litres/minute so that the main burner lights, then adjust nut E on the modureg.

From manual B023 / B029, page 20.

Forcing Minimum Rate

1. To set the minimum power, disconnect a supply terminal from the modureg and adjust screw F.

From manual B023 / B029, page 38.

CO₂ and CO from manual B023 / B029, page 4. Check against the data badge.

Genus 24 MFFI / 24 RFFI ( )

Covers: Ecogenus 24 MFFI, Ecogenus 24 RFFI System, Genus 24 MFFI

GC 41-116-03, 47-116-17

Enter Test Mode (Maximum Power)

1. Turn the selector knob 'A' to the flue test position (marked with < > symbols).
2. To force maximum output, rotate the potentiometer for maximum heating output regulation (PR) completely clockwise.

From manual 23 99 84 1439 112, page 18.

Service Access & Potentiometer Adjustment

1. Open the control panel by unscrewing plastic fastening screws.
2. Raise the rubber protection stopper to access RA (Ignition delay), PR (Max CH power), and RLA (Soft-light) potentiometers.

From manual 23 99 84 1439 112, page 17.

CO₂ and CO from manual 23 99 84 1439 112, page 24. Check against the data badge.

Genus 27 BFFI Plus

Covers: Genus 27 BFFI Plus

GC 47-116-11

Flue Test / Service Mode Entry

1. Open a water tap or taps so that the flow rate is no less than 8 litres per minute.
2. Press the selector knob C in and turn it from Summer or Winter to the flue test setting.

From manual 400, page 56.

CO₂ and CO from manual 400, page 20. Check against the data badge.

Genus 30 Plus End User

Covers: Genus 30 Plus

GC 47-116-28

Entering Combustion Analysis / Test Mode

1. Turn the Selector Knob 25 to central heating only position.
2. Turn the C.H. temperature control knob 27 to maximum.

From manual 1312485 - 04/2004, page 39.

CO₂ and CO from manual 1312485 - 04/2004, page 64. Check against the data badge.

Genus Combi Boiler

Covers: Genus, Genus 27 RFFI System, Number 47-116-08

GC 41-116-01, 47-116-08, 47-116-09

Entering Flue Analysis Mode (Max Power Test)

1. Turn the selector knob C to the flue analysis setting to test at maximum power for the heating system.

From the installation and servicing manual, page 23.

GENUS HE Gas fired condensing wall hung combination boilers

Covers: Genus HE 24, Genus HE 30, Genus HE 38

GC 47-116-54, 47-116-55, 47-116-56

Entering test function / service mode

1. Activate the test function by pressing the Reset button for 5 seconds, the boiler switches to maximum heating power.
2. To select the function at maximum domestic hot water, turn the encoder.
3. To select the function at minimum domestic hot water, turn the encoder.
4. The function is automatically deactivated after 10 minutes or by pressing the Reset button.

From the installation and servicing manual, page 32.

Accessing Technical Assistance Menus (Service Parameter)

1. Press the Menu/Ok button; the first figure 000 will flash on the display.
2. Turn the encoder to select menu 8 (Service Parameter).
3. Press the Menu/Ok button; 810 will appear.
4. Press Menu/Ok; 222 will appear.
5. Turn the encoder clockwise to select code 234 (Correct code).
6. Press the Menu/Ok button to select the sub menu.

From the installation and servicing manual, page 35.

CO₂ and CO from the installation and servicing manual, page 8, 32. Check against the data badge.

Replacement Gas Valves are not factory set and will need to be set up (page 61)

GENUS ONE Net

Covers: Genus ONE Net

GC 47-116-93, 47-116-94, 47-116-95

Enter Technical Area / Service Mode

1. Simultaneously press the ESC and OK buttons for 5 seconds
2. The display will visualise the request for entering the technical code
3. Press the programming key to select code 234
4. Press OK to confirm

From manual 420010963800, page 38.

Force Max/Min Rate (Chimney Function)

1. Select the Chimney function by pressing the RESET button for 10 seconds
2. The display will visualise 'Chimney active'
3. Use the '>' button to toggle between Max power DHW, Max power CH, and Min Power
4. Wait 1 minute for the boiler to stabilise before analysis

From manual 420010963800, page 32.

Exit Service Mode

1. Exit cleaning mode by pressing RESET
2. Stop the draw-off
3. Verify and repair any leaks of gas
4. Refit the blanking cover for the combustion outlets

From manual 420010963800, page 32.

CO₂ and CO from manual 420010963800, page 32. Check against the data badge.

HS PREMIUM INSTALLATION AND MAINTENANCE

Covers: HS Premium

Activation of TEST Function (Service Mode)

1. To start the boiler on DHW at maximum power: hold down the (reset) button for 10 sec and turn the knob to select DHW at maximum power.
2. Alternatively, to enter test mode: press the (reset) key for 5 seconds.
3. To force the central heating to operate at maximum power on the DHW: once in test mode, press the (1) button.

From manual 420000255500, page 17.

CO₂ and CO from manual 420000255500, page 17. Check against the data badge.

Installation, Type C Boilers SYSTEM A 24 MFFI / SYSTEM A 30 MFFI

Covers: Egis 24 MFFI

GC 41-116-14

Accessing Service / Combustion Rate Control Mode (Menu 5)

1. Access the setting menu by pressing the + and - buttons for 5 seconds the symbol icon will be shown in the display;
2. Press the menu button four times to access Menu 5 and press the setting button once to switch the output of the boiler to maximum
3. Press the setting button - once to set the combustion control rate mode to minimum
4. Press the setting button + again to set the combustion control rate mode to maximum

From manual 1316457b - 12/2005, page 34.

CO₂ and CO from manual 1316457b - 12/2005, page 34, 60. Check against the data badge.

Micro Combi 27 MFFI

Covers: Micro Combi 27 MFFI, Microcombi 23 MFFI

GC 47-116-16, 47-116-24

Flue Test Analysis Mode (Max Output)

1. Lower the control panel by unscrewing fastening screws 'A'.
2. Press and hold the RESET button 'J' for 10 seconds.
3. The yellow L.E.D. 'H' will illuminate to indicate the mode is active.
4. The boiler will return to normal operation after 5 minutes, or sooner by switching the boiler off and on again.

From manual 0 99 84 1589 311, page 23.

CO₂ and CO from manual 0 99 84 1589 311, page 52. Check against the data badge.

The gas valve is factory-set. Adjustment of the gas pressures (SIT SIGMA or HONEYWELL) must be performed by a qualified service engineer. (page 26)

Micro Condens (Combi / System)

Covers: Micro Condens

GC 47-116-23

Enter/Exit Service Mode (Flue Sweep)

1. Press and hold the RESET key 'H' for 5 seconds to enable Flue Sweep mode.
2. The boiler operates at maximum heating power for 5 minutes.
3. Press the RESET key 'H' to disable/exit the mode.

From manual 47-116-23 / 41-116-08, page 28.

Force Min/Max Power (without Flue Sweep)

1. Access 'Test Function' menu (parameter 't').
2. To force Maximum: press '+' key 'F', two dashes appear at top of display.
3. To force Minimum: press '-' key 'G', two dashes appear at bottom of display.
4. Alternative for Max: press Comfort key 'K'.
5. Alternative for Min: press 'K' and 'H' keys simultaneously.
6. Press RESET key 'H' to exit.

From manual 47-116-23 / 41-116-08, page 22.