andrews MAXXflo EVO CWH 30/201, Руководство по установке и обслуживанию

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Maintenance 72 MAXXfl o EVO
6.5 ERROR CODES
Error
Code
Error Code Description Diag.
Code
Notes
20 Boiler temperature 1, sensor
error
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
26 Common fl ow temperature
sensor error
Any Check connections or replace faulty sensor located on com-
mon fl ow pipe work up stand section (B10)
28 Flue gas temperature, sensor
error
539
543
Flue gas sensor (B8) is short-circuit
540
544
Flue gas sensor (B8) is open-circuit
40 Return temperature 1, sensor
error
Other Boiler fl ow sensor (B7) is outside normal limits
441 Boiler fl ow sensor (B7) is short-circuit
442 Boiler fl ow sensor (B7) is open-circuit
50 DHW temperature 1, sensor
error
Any Check connections or replace faulty DHW tank sensor (B3)
81 LPB short-circuit or no power
supply
Any LPB Short circuit or no bus power supply. Check operation of
OCI345 modules and connecting cables
82 LPB address collision Any LPB address duplicated on another Control PCB - Check ad-
dress of all control PCBs via parameter 6600
83 BSB short circuit Any No BSB communication or wires shorted - Check operation of
GUI or OZW672 (if fi tted)
84 BSB address collision Any Two appliances connected through BSB (e.g. OZW672) have
the same allocation address. Change one of the appliances
address via parameter 6600
98 Extension module 1, error Any AGU2.5 confi guration error - Check parameters
99 Extension module 2, error Any AGU2.5 confi guration error - Check parameters
100 More than one clock time
master
Any Only one device should be set as the time master, check on
the GUI (parameter 6640) and any OZW672 connected (in
case of connection to an OZW672, this device should be the
master)
102 Clock master without power
reserve
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 message does not prevent the operation
of the heater in any way.
105 Maintenance message Any Item requiring attention but not preventing appliance operation
(e.g. 12 Month service due). Check details of message on the
appliance Front GUI screen.