Fault Memory; Fault Codes - Glow-worm Ultracom 2 24cxi Installation And Servicing

MAINTENANCE
15.2

fault memory

• This menu allows you to display the 10 most recent failure
codes registered by the appliance.
• In order to display the fault code memory, simultaneously
press the buttons and
than 7 seconds.
• The screen will display the first fault "01" (record) and "F.XX"
(fault code).
• To display the other faults registered by the appliance, press
the button or under the symbol
• Press button
for more than 3 seconds to exit this
menu.
Record fault code Description
01 XX Consult the "Fault codes" chapter.
02 XX Consult the "Fault codes" chapter.
03 XX Consult the "Fault codes" chapter.
04 XX Consult the "Fault codes" chapter.
05 XX Consult the "Fault codes" chapter.
06 XX Consult the "Fault codes" chapter.
07 XX Consult the "Fault codes" chapter.
08 XX Consult the "Fault codes" chapter.
09 XX Consult the "Fault codes" chapter.
10 XX Consult the "Fault codes" chapter.
• To erase the fault memory registered by the appliance,
consult the "Installation adjustments" chapter and use code
"d.94".
15.3

fault codes

i The faults described in this chapter should be
carried out by a qualified engineer and if needed by
the After Sales Service.
fault
Description
codes
F00 Flow heating temperature sensor fault
F01 Return heating temperature sensor fault
F10 Flow heating temperature sensor fault
F11 Return heating temperature sensor fault
F20 Overheating fault
F22 Water pressure of the installation (<0.3 bar)
Maximum temperature difference reached
F23
between return and flow heating
F24 Water circulation fault
- 34 -
Supplied By www.heating spares.co Tel. 0161 620 6677
under the symbol for more
.
Cause
Sensor open circuit
Return heating temperature sensor
disconnected
Sensor short-circuit
Return heating temperature sensor
shorted.
Overheating safety device activated
(97°C)
Return water valve closed
Pump disconnected
Leak in the installation
Water circulation fault
Malfunction of the pump (excessively
rapid temperature increase)
Solution
• Check the sensor's connections.
• Check the wiring harness.
• Check the sensor.
• Check the operation of the pump.
• Check the wiring harness.
• Check that the flow and return heating isolation
valves are open.
• Fill the installation.
• Purge the installation.
• Check the pump connections.
• Check the flow and return heating sensor
connections.
• Check that there are no leaks.
• Check the flow and return heating sensor
connection.
• Check the pump speed.
• Check that the flow and return heating isolation
valves are open.
0020085231_02 - 05/10 - Glow-worm