Service mode › Intergas
Intergas boiler service mode
How to put an Intergas boiler into service mode, so it holds maximum or minimum rate while you take combustion readings. 10 models from 5 Intergas installation and servicing manuals, each step with the page it came from.
Grouped by manual: one manual usually covers a range of outputs. The CO₂ figures are the manual's own. Set and check them with a calibrated analyser, never by eye.
Combi Compact HRE Installation, service and
Covers: Combi Compact HRE, Combi Compact HRE 28/24, Combi Compact HRE 36/30
GC 47-291-02, 47-291-03, 47-291-04
Test programs / Forcing min & max rate
- Burner on at minimum power: press and simultaneously, display shows L.
- Burner on with maximum CH power setting: press and (1x) simultaneously, display shows h.
- Burner on with maximum DHW power: press and (2x) simultaneously, display shows H.
- Switch off test program: press and simultaneously.
From manual 882877-15, page 12.
Entering service / parameter mode
- Press and keys simultaneously until a 0 appears on the service- and main display.
- Using the and keys set 15 (service code) on the main display.
- Using the key set the parameter to be set on the service display.
- Using the and keys set the parameter to the desired value on the main display.
- Press the key until a P appears on the service display to store changes.
From manual 882877-15, page 35.
| Model | Gas | CO₂ max rate | CO₂ min rate | CO max |
|---|---|---|---|---|
| Combi Compact HRE | LPG | 10.3% ± 0.5 | 9.3% | – |
| Combi Compact HRE 36/30 | LPG | 10.3% ± 0.5 | – | – |
CO₂ and CO from manual 882877-15, page 39. Check against the data badge.
The combustion for this appliance has been checked, adjusted and preset at the factory for operation on the gas type defined on the appliance data plate. Do not adjust the air/gas ratio valve. (page 30)
Intergas Compact HRE SB Installation, service and
Covers: Combi Compact HRE SB
Entering Service Mode / Parameters
- Press the and keys simultaneously until a 0 appears on the service- and temperature display.
- Using the and keys set 15 (service code) on the temperature display.
- Using the key select the parameter to be set on the service display.
- Using the and keys set the parameter to the desired value (visible) on the temperature display.
- Once all desired changes have been entered, press the key until a P appears on the service display.
From the installation and servicing manual, page 39.
Test Programs (Force Max & Min Rate)
- Burner on at minimum power: press and simultaneously -> Display reads 'L'
- Burner on with maximum CH power setting: press and (1x) simultaneously -> Display reads 'h'
- Burner on with maximum DHW power: press and (2x) simultaneously -> Display reads 'H'
- Switch off test program: press and simultaneously
From the installation and servicing manual, page 14.
| Gas | CO₂ max rate | CO₂ min rate | CO max |
|---|---|---|---|
| Natural gas | 9.6% | 8.6% | 160 ppm |
| LPG | 10.8% | 9.8% | 160 ppm |
CO₂ and CO from the installation and servicing manual, page 46. Check against the data badge.
The combustion for this appliance has been checked, adjusted and preset at the factory for operation on the gas type defined on the appliance data plate. Do not adjust the air/gas ratio valve. (page 34)
Rapid 25 / Rapid 32
Covers: Rapid 25, Rapid 32
GC 47-291-08, 47-291-09
Enter Service Mode / Parameter Setting
- Set the appliance in the off mode using the On/Off key (- on the service display).
- Simultaneously press the Service and Reset keys, until a 0 appears on the service and the temperature displays.
- Using the '+' and '-' keys, set 15 (service code) on the temperature display.
- Press the 'Service' key to confirm the code and enter the desired parameter.
- Set using the 'Service' key the parameter to be set on the service display.
- Set using the '+' and '-' keys the parameter to the required value on the temperature display.
- After having entered all required changes, press the 'Reset' key until P appears on the service display.
- Switch on the appliance again using the 'On/Off' key.
From the installation and servicing manual, page 46.
Force Max & Min Rate (Test Programs)
- Burner on at minimum CH power: Press service and reset buttons simultaneously to display 'L'.
- Burner on with maximum CH power setting: Press service and reset buttons simultaneously (1x) to display 'h'.
- Burner on with maximum DHW power: Press service and reset buttons simultaneously (2x) to display 'H'.
- Switch off test program: Press service and reset buttons simultaneously until standard situation returns.
From the installation and servicing manual, page 17.
| Gas | CO₂ max rate | CO₂ min rate | CO max |
|---|---|---|---|
| Natural gas | 9.6% ± 0.1 | 8.6% ± 0.1 | 160 ppm |
| LPG | 10.8% ± 0.1 | 9.8% ± 0.1 | 160 ppm |
CO₂ and CO from the installation and servicing manual, page 54. Check against the data badge.
The combustion for this appliance has been checked, adjusted and preset at the factory for operation on the gas type defined on the appliance data plate. Do not adjust the air/gas ratio valve. (page 41)
Xclusive
Covers: Xclusive
GC 47-291-14, 47-291-15
Service Mode (Test Programs)
- Hold Service button and tap Minus button for minimum DHW capacity (L)
- Hold Service button and tap Plus button once for set maximum CH output (h)
- Hold Service button and tap Plus button twice for maximum capacity (H)
- To terminate: tap Minus and Plus buttons simultaneously
From manual 84010402, page 47.
| Gas | CO₂ max rate | CO₂ min rate | CO max |
|---|---|---|---|
| Natural gas | 9.6% | 8.6% | 160 ppm |
| LPG | 10.8% | 9.8% | 160 ppm |
CO₂ and CO from manual 84010402, page 58. Check against the data badge.
This boiler has been factory set but adjustment may be required (page 14)
Xtreme
Covers: Xtreme 24, Xtreme 30, Xtreme 36
GC 47-291-10, 47-291-11, 47-291-12
Enter Service Menu / Test Programs
- Touch the Service button from the menu and hold it for 2 seconds to enter the service menu.
- To activate test program L (Burner on with minimum DHW capacity): hold the Service button and at the same time tap the Minus button.
- To activate test program h (Burner on with set maximum central heating output): hold the Service button and at the same time tap the Plus button.
- To activate test program H (Burner on with maximum capacity): hold the Service button and at the same time tap the Plus button 2x.
- To terminate any test program, tap the Minus button and the Plus button at the same time.
From manual 84007407, page 47.
| Gas | CO₂ max rate | CO₂ min rate | CO max |
|---|---|---|---|
| Natural gas | 9.6% | 8.6% | 160 ppm |
| LPG | 10.8% | 9.8% | 160 ppm |
CO₂ and CO from manual 84007407, page 58, 62. Check against the data badge.
The gas/air control is set in the factory such that the combustion is optimal for the gas type used. Work on gas supply pipe components as well as the adjustment of the gas air control must be performed by an authorised installer. (page )
Nothing matches that. The app covers more Intergas models than have a service-mode procedure here.
The app
Every Intergas manual, searchable on the job
Service mode, gas valve and combustion figures, fault codes and the full manual for the boiler in front of you, plus Ask Flint for anything the manual covers.
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Common questions
Is service mode the same as chimney sweep mode?
Yes, in practice. Makers use different names for the same function: service mode, chimney sweep mode, test mode, calibration mode, check programme. Each one holds the burner at a fixed rate, usually maximum then minimum, so you can take a stable combustion reading.
Can I adjust the gas valve while it's in service mode?
Only where the manual gives an adjustment procedure, and only with an analyser in the flue. Many current boilers are set at the factory and the manual says not to touch the gas valve. Where a manual says that, it is shown with the procedure above.
Other makers
AlphaAristonAtagBaxiBiasiChaffoteauxFerroliGlow-wormHalsteadHeatlineIdealJohnson StarleyKestonMainPottertonRemehaSimeVaillantViessmannVokeraWorcester Bosch
Service mode and combustion checks are work for a competent, Gas Safe registered engineer. These procedures are taken from the manufacturers' manuals and inform your judgement; they don't replace it. Always work to the manual for the exact appliance, its data badge and the current standards.