Glow-worm Easicom 28 Installation And Servicing

0020145065_01 - 09/12 - Glow-worm
Fault
codes
Description Cause Solution
F61
Fault in the main board
Gas valve command fault
• Check the main boards connections.
• Check the main board.
• Check the appliance DSN number is correct.
• Reset the appliance.
F62 Gas valve closure fault
F63 Fault in the main board memory
F64
Rapid uctuation of return or ow heating
sensor.
F65 Excessive main board temperature
F67 Flame signal fault in the main board
F68 Fluctuation of ame signal
No return gas / Insucient gas ow
Gas valve incorrectly adjusted
Defective ring electrode and ame control /
Defective igniter unit
• Check the return gas circuit (gas valve open).
• Check the observe the ame picture and check the
CO
2
setting.
• Check the igniter unit connections.
• Check the state of the electrode (corrosion).
F70
User interface incompatible with the
main board
Incorrect product code
• Check that the appliance DSN code on the screen
matches the product code of the nameplate (in the
event of a fault and the appliance DSN does not
appear, consult menu.d.93 reserved for the code).
• Check the boards reference.
F71 Flow heating temperature sensor fault
Flow heating temperature sensor unclipped
or defective (no temperature variation)
• Check the sensor connections.
• Make sure that the sensor is clipped to the tube.
F72
Permanent temperature dierence
between ow and return heating
sensors
Mismatch between the ow and return
heating temperatures (permanent dierence)
• Check temperature sensors connections.
• Replace faulty sensors.
F73 Heating circuit pressure sensor fault The sensor is shorted or disconnected.
• Check the sensor’s connections.
• Check the sensor.
F74 Heating circuit pressure sensor fault Fault in pressure sensor
F76 Thermal fuse fault
Thermal fuse disconnected
Defective thermal fuse
• Check the fuses connections.
• Replace the heat exchanger.
F77 Fault in gas valve motor.
Defective gas valve.
Defective condensate pump (option)
• Check the gas valve connections.
• Check the operation of the gas valve.
• Check the operation of the condensate pump (option).
F83
No water in the installation : the
temperature does not increase when the
burner is lit
Return water valve closed
Pump disconnected
Leak in the installation
• Fill the installation.
• Purge the installation.
• Check the pump connections.
• Check the ow and return heating sensor
connections.
• Check that there are no leaks.
F84
Permanent temperature dierence
between ow and return heating
sensors
Inverted or disconnected ow and return
heating temperature sensors
Defective temperature sensors
• Check temperature sensors connections.
• Replace faulty sensors.
F85 Flow and return heating sensors fault
Flow and return heating temperature sensor
connected to same tube
• Check temperature sensors connections.
F86 Underoor heating contact fault
Floor heating contact open
Sensor disconnected or defective
• Check the sensor connections.
• Check that the sensor is connected to the main
board and the shunt is removed.
Err User interface fault Defective user interface
• Check connection from user interface PCB to main
PCB.
• Replace user interface.
MAINTENANCE
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Glow-worm Easicom 28 Specifications

General

Type	Combi Boiler
Output	28 kW
Energy Efficiency Rating	A
Mounting	Wall Mounted
Central Heating Output	24 kW
Domestic Hot Water Output	28 kW
Fuel Type	Natural Gas
Central Heating Max Pressure	3 bar