78
u 102
FUMES
THERMOSTAT
OR INTERNAL
EXCHANGER
THERMOSTAT
The fumes thermostat is
open.
Contact authorised Robur TAC.
E 102
FUMES
THERMOSTAT
OR INTERNAL
EXCHANGER
THERMOSTAT
"u102" tripped 3 times in 2
hours of operation, or "u 102"
persists for 1 hour.
Contact authorised Robur TAC.
E 103
HEATING
CONTROLLER NOT
PRESENT
The auxiliary controller (S70)
is not present.
Contact authorised Robur TAC.
E 105
HIGH AMBIENT
TEMPERATURE
The ambient temperature
is HIGH. This only happens
when the appliance is
operating.
Automatic (on termination of
originating event).
E 106
LOW AMBIENT
TEMPERATURE
The ambient temperature is
LOW. This only happens 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 Robur TAC.
u 127
MACHINE
INTERNAL CIRCUIT
WATER PRESSURE
SWITCH
The status of the pressure
switch does not correspond
to the status of the water
circulator of the machine's
internal circuit.
Automatic, when the status of the
circulator and the pressure switch
coincide.
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 Robur TAC.
E 128
FLAME
CONTROLLER ON
AND ARRESTED
The flame controller is
arrested but the gas solenoid
valve is excited. In this case
the flame controller is de-
excited.
Reset via the controller, menu 2,
parameter 20 (or via DDC). If the code
persists, contact authorised Robur TAC.
u 129
GAS SOLENOID
VALVE WITHOUT
ELECTRICAL
POWER
Gas solenoid valve is off
for 5 seconds (with flame
controller on).
Automatic, when at least of the
following conditions obtains (and only
if the "E 101" condition has not been
forced): flame controller off, or solenoid
valve excited.
