9
OPERATING CODES/TROUBLESHOOTING
Installation, user and maintenance manual – AY Condensing line, AY Series
59
9
OPERATING CODES/TROUBLESHOOTING
9�1
OVERVIEW AND OPERATING CODES/TROUBLESHOOTING
If, during the operation of the appliance, the display of the controller of the appliance (or also of the display of the Direct Digital
Controller, if connected) signals an operating code, it is necessary to:
▶
make a note of the indications shown on the display;
▶
consult the (specific) list of machine operating codes.
For the operating codes generated by the controller of the appliance, refer to Table 9.1
→
59. If the appliance is connected
to a DDC, a list of the operating codes generated by the DDC is provided in the DDC's manual (see "installation technician
manual - manual 1").
▶
carry out the instructions contained in it scrupulously (contact your Authorised Robur Technical Assistance Centre when in-
structed to do so).
If, after performing these operations, the appliance does not start, first carry out the following simple checks:
▶
ensure that the external disconnecting switch fitted by the electrical installation technician on a suitable panel (see Section
6
→
32) is set to ON;
▶
check that the consent switches (see Paragraph 6.3
→
39) or the DDC (if connected and in controller mode) are set for operation
of the appliance;
▶
check that the gas supply valve is open;
▶
determine that no further indications are given on the display.
At this point, if the appliance still does not start:
▶
refrain from proceeding by trial and error; instead request the direct assistance of an authorised Robur Technical Assistance Cen-
tre (TAC), informing it of the Machine Code that has arisen;
▶
disconnect the appliance from the gas and electricity supply, cutting off the gas supply by means of the appropriate tap and
electrical power via the external master power switch. Wait for the TAC staff to arrive.
For how to reset the machine operating code with the on-board controller, refer to Paragraph 4.3
→
15.
We list below the operating codes generated by the appliance's controller (firmware version 3.106). The following codes can also be
displayed by the DDC, if connected.
Table 9�1 – TABLE OF OPERATING CODES generated by the electronic board (firmware version 3.106)
CODES
DESCRIPTION
TRIP CONDITIONS
RESET METHOD
E 100
FLAME RESET FAULTY
The flame control unit reset circuit is faulty.
Contact authorised Technical Assistance.
E 101
LIMIT THERMOSTAT
The limit thermostat is open. This only happens
if the flame controller is on and the gas solenoid
valve is excited (the thermostat is connected in
series with the solenoid valve power supply).
Contact authorised Technical Assistance.
u 102
FUMES THERMOSTAT AND/
OR INTERNAL EXCHANGER
THERMOSTAT
The fumes thermostat and/or the internal ex-
changer thermostat are interrupted.
Contact authorised Technical Assistance.
E 102
FUMES THERMOSTAT AND/
OR INTERNAL EXCHANGER
THERMOSTAT
"u 102" persistent for 1 hour.
Contact authorised Technical Assistance.
E 103
HEATING CONTROLLER NOT
PRESENT
The auxiliary controller (S70) is not present.
Contact authorised Technical Assistance.
E 105
HIGH AMBIENT TEMPERATURE
The ambient temperature is HIGH. This only hap-
pens when the appliance is operating.
Automatic (on termination of originating event).
E 106
LOW AMBIENT TEMPERATURE
The ambient temperature is LOW. This only hap-
pens when the appliance is operating.
Automatic (on termination of originating event).
u 107
WATER PRESSURE SWITCH (HOT
ONLY CIRCUIT)
The system water differential pressure switch is
closed while the appliance is running in cooling
mode. This only happens when the appliance is
installed in a "hot/cold" system.
Automatic (on termination of originating event).
u 112
FLAME CONTROLLER FAULT
The burner does not light.
Automatic when the flame controller attempts ignition again
(solenoid valve excited - maximum 4 attempts); or after 5 minutes
of persistence: in this case, ignition has failed and a new event has
occurred after "u112" was reset (run checks).
E 112
ARREST OF FLAME CONTROL
UNIT
Flame controller arrested - failure to ignite burner:
all possible attempts to ignite the burner have
failed.
Reset via the controller, menu 2, parameter 20 (or via DDC). If the
code persists, contact authorised TAC.
u 127
MACHINE INTERNAL CIRCUIT
WATER PRESSURE SWITCH
Lo stato del pressostato non corrisponde allo
stato del circolatore acqua del circuito interno
della macchina.
Automatico ed avviene se si ha corrispondenza di stato tra il circo-
latore e il pressostato differenziale.
E 127
MACHINE INTERNAL CIRCUIT
WATER PRESSURE SWITCH
"u 127" persistent for 10 minutes.
Carry out appropriate checks. Reset via the controller, menu 2,
parameter 21 (or via DDC). If the code persists, contact authorised
TAC.
