Viessmann Vitodens 222-F Operating instructions

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We create living spaces for generations to come
Academy
Troubleshooting Fault ‘EE’ and ‘EB’
Technical Training Series

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Vitodens 222-F, B2TB Vitodens 200, B2HA&B Vitocrossal 300, CU3A Vitodens 200, WB2B
Some of
these
procedures
apply to the
W 2 ,
(Previous Vitodens
200 Generation
- 7 Sizes
67 000 – 370 000 TU
Max)
Single Model 12 000 BTU
Maximum Input
Ten Models
Four Models 94 000 to 199 000 BTU
Maximum Input
BB
A

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Fault Information Located in the - Service Instructions Manual -

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Fault Information Located in the - Service Instructions Manual -

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Lambda Pro
Burner Combustion Management
The Lambda calibration point
is used to maintain optimum
combustion throughout the
burner operation.
Lambda Pro Technolog : How it works:
-Controls gas and air independentl
of each other
-Ionization current indicates flame
qualit , not just proof of flame
-Gas and air control constantl
adjusts to changes
-No field adjustments required
Excess Air
Ionization Current
Optimum
Range

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What happens while calibrating?
Lambda Pro Burner Combustion Management
-Burner runs at constant speed, (Approximately 2880 RPM)
-The flame signal is measured and compared to the
factory default range, an internal computing process
calculates then adjusts Fuel/Air ratio
-The calibration process takes about 1 minute
- Calibration is an automatic alignment which occurs at
regular intervals to consider drift and aging of the
ionization electrode
-It adjusts the firing process to the existing gas quality
maintaining a more consistent fuel air ratio, resulting in
more reliable boiler operation

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What happens while calibrating?
Lambda Pro Burner Combustion Management
-There are two kinds of calibration
20% and 100%
-The difference between a 20% calibration to 100%
calibration?
-A 20% calibration is added/compared with past
calibrations to position the base value
-A 100% calibration becomes the new base value
-A 100% calibration can be conducted manually
-20% calibration occurs after every error message,
after every power up and then after every 2nd, 4th,
8th, 16th, 32nd, 64th, 2 6th and 12th burner start.
Then every 12th burner start

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Overview of the areas to troubleshoot for Fault ‘EE’ & ‘E ’
Gas delivery
Heat
Flow,
(EB)
Venting
Combustion
Air
Condensate
Fireside of
heat
exchanger
Burner
Tube
Gas Valve/Burner Assembly
Ignition and Ionization
Electrical/control

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Service Tools Required for Combustion Fault Troubleshooting
https://viessmannorange.weeverapps.com/?postLogin=true
https://www.viessmann.ca/en/services/login.html

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Troubleshooting – Fault ‘EE’ & ‘EB’ – Checking Polarit
Check for voltage, (AC), on
Ionization Cable

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Troubleshooting – Fault ‘EE’ & ‘EB’ – Checking Ground

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Measuring Gas Pressure
Three Measurements must be checked:
Check Static – 14” wc Maximum
Perform Rela Test – Full Load,
(High Fire) – 4” wc Minimum, 10” for
Propane
Power boiler off as burner is in high
fire to check
Lock-up pressure, must sta below
14”
Troubleshooting – Fault ‘EE’ & ‘EB’ – Gas Deliver Pressure

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Measuring Gas Pressure
Perform Rela Test – Full Load,
(High Fire) – 4” wc Minimum, 10” for
Propane
Troubleshooting – Fault ‘EE’ & ‘EB’ – Gas Deliver Pressure

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Measuring Gas Pressure
Power boiler off as burner is in high
fire to check
Lock-up pressure, must sta below
14”
Troubleshooting – Fault ‘EE’ & ‘EB’ – Gas Deliver Pressure

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Gas Piping – Keep Gas Regulators more than 3’ upstream of boiler ensure proper piping of system to avoid damage to gas valve
Troubleshooting – Fault ‘EE’ & ‘EB’ – Gas Piping

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Copper Gas Line Issues – High Pressure Drop
Troubleshooting – Fault ‘EE’ & ‘EB’ – Gas Piping - Sulfidation

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Gas Valve Power Connections
Power – 35 Plug – Vdc
Analogue Lambda Pro
Control Signal – 190 Plug - Vdc
Troubleshooting – Fault ‘EE’ & ‘EB’ – Gas Valve

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Measure for resistance across valve coil – oth 35 and 190
X
Troubleshooting – Fault ‘EE’ & ‘EB’ – Gas Valve
190 Plug 3 Plug
Open
circuit
Small Gas Valve 1.6 Kohm
Large Gas Valve 0.6 Kohm
Small Gas Valve 7 ohm
Large Gas Valve 20 ohm

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Measure for Voltage to Gas Valve
Troubleshooting – Fault ‘EE’ & ‘EB’ – Gas Valve
Measurement of
Vdc from 190
Plug – Low Fire
3. Vdc
High Fire . Vdc

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Lambda-Pro-Control Version 2
The Ignition Electrode Used As A Second Io Electrode
New Ignition
Transformer Unit
carries the second
Ionization signal.
Ignition electrode
used as a Second
Ionization Electrode
Primary Ionization
Electrode
time
Ionization Signal
Addressing The Ionization Valle
Ionization
Valley
- On Startup the ionization signal dips
as the electrode warms up
- Lambda Pro Version 2 uses a second flame detector
to stabilize the flame signal during this period