SECTION 9
-
Fault codes and fault finding
FAULT CODE
DISPLAY SYMBOL
MESSAGE
ACTION
REMARKS and REFERENCES
A fault has been detected in the external
PT1000 sensor (optional extra selected at
point of commissioning) used for weather
compensation function.
The HIU PID Controller will then turn off
the
‘
AUTO
’
function which is used for
Optimised Heating Function
-
as shown in
the below symbol (heating flow tempera-
ture automatic set point calculation):
The HIU PID Controller reverts to the
standard mode for heating until the fault
is fixed.
•
Check connection of the
sensor cable in the HIU PID
Controller, reconnect and
check if error clears.
•
Replace temperature
sensor if found to be faulty.
The HIU PID Controller will
automatically reset back to
AUTO mode when the fault is
rectified.
WEATHER COMPENSATION
OUTSIDE SENSOR
Spare Part Ref
841.00.00
The sensor is to found on the outside
of the building.
Power failure within the controller.
The result is that central heating and
DHW may not be available as the HIU PID
Controller will not allow these functions
until the fault is rectified
The HIU PID Controller will automatically
reset to normal operation once the cause
of the fault has been corrected.
•
Check power supply.
•
Check fuse in the wiring
box
Once proven that the fault lies
within the controller,
disconnect the power supply
and disconnect all connection
plugs on the main board as
shown. Unclip the board care-
fully, and then install the new
board. Plug in all the connec-
tions exactly as they come out.
Replace the cover, and test /
check. Turn on the power and
all will reset
HIU CONTROLLER PCB Power Board
Spare Part Ref
H10002SP
The HIU PID Controller has registered an
anomaly in the power consumption as
compared to what it expects to see.
The result is that central heating and
DHW may not be available
Possible Pump Failure
•
Check error display on the
pump
•
Check cable and
connectors
•
Replace the pump if
proven to have failed.
Possible Diverter valve failure
•
Check cable and
connectors
•
Check valve motor for
operation and replace if
proved to be not
operating.
PUMP HEAD
Wilo Yonos Para 7.0 RKC
Spare Part Ref
H10013SP
DIVERTER ACTUATOR
Spare Part Ref H10010SP
A fault has been detected in the central
heating return temperature sensor.
The HIU PID Controller will disable the
AUTO function and run without the
Optimised Heating Function
•
Check connection of the
sensor cable in the HIU
Controller. Reconnect and
check if error clears.
•
Replace the temperature
sensor if found to be faulty.
TEMPERATURE SENSOR PT1000
Central Heating RETURN sensor.
Disconnect and replace . See spares
page 23 for position. Isolate the HIU
and drain all water first.
Spare Part Ref
H10012SP
When carrying out any repair work on the HIU the unit must be switched off and isolated!
Always isolate the power supply before opening the unit!
09/17 E & OE
Summary of Contents for Hiper Xi45 INDIRECT HIU 45DHW/10HTG
Page 28: ...09 17 E OE ...
