Fault Code Table - andrews COMBIflo 100/300 Installation, Operation And Maintenance Manual

6.6 FAULT CODE TABLE

Fault Fault Description
Code
10 Outside sensor, error
20 Boiler temperature 1, sensor error
22 Water pressure 3 too low
26 Common fl ow temperature sensor
error
28 Flue gas temperature, sensor
error
40 Return temperature 1, sensor
error
50 DHW temperature 1, sensor error
60 Room temperature 1, sensor error
81 LPB short-circuit or no power
supply
82 LPB address collision
83 BSB short circuit
84 BSB address collision
98 Extension module 1, error
99 Extension module 2, error
100 More than one clock time master
102 Clock master without power
reserve
105 Maintenance message
ANDREWS COMBIfl o
Sub Notes
Code
Any Outside temperature sensor (B9) is faulty or missing. Check sensor
and wiring for operation (a resistor is pre fi tted which has a value
equivalent to 0 C. When an outside sensor is installed the pre fi tted
O
resistor should be removed).
Other Boiler fl ow sensor (B2) is outside normal limits
439 Boiler fl ow sensor (B2) is short-circuit
440 Boiler fl ow sensor (B2) is open-circuit
Any Water pressure in primary system is low and requires refi lling to a
minimum of 1.0 bar
Any Check connections or replace faulty sensor located in fl ow pipe work
up stand section (B10)
539 Flue gas sensor (B8) is short-circuit
543
540 Flue gas sensor (B8) is open-circuit
544
Other Boiler return sensor (B7) is outside normal limits
441 Boiler return sensor (B7) is short-circuit
442 Boiler return sensor (B7) is open-circuit
Any Check connections or replace faulty DHW tank sensor (B3)
Any Check connections or replace faulty room unit (R1)
Any LPB Short circuit or no bus power supply. Check operation of OCI345
modules and cables
Any LPB address duplicated on another Control PCB - Check address of
all PCB parameter 6600
Any No BSB communication or wires shorted - Check operation of room
units and display modules
Any Two room units have the same allocation address
Any AGU2.5 confi guration error - Check parameters
Any AGU2.5 confi guration error - Check parameters
Any Only one device should be set as the time master, check all LMS14s
(parameter 6640) and any OZW672 connected (in case of connection
to an OZW672, this device should be the master)
Any The control PCB battery backup for the time clock has been depleted
following the restoration of power to the heater. If this message has
not cleared within 10 minutes of power being turned on, turn the
power off , wait 10 seconds and turn the power on again. This mes-
sage does not prevent the operation of the heater in any way.
Any Item requiring attention but not preventing heater operation (e.g. 12
Month service due). Check details of message on the heater Front
GUI screen.
70 GB