Explaining the HIU Controller Fault or Error diagnostics feature.
FAULT CODE
DISPLAY SYMBOL
MESSAGE
ACTION
REMARKS and REFERENCES
Warning Symbol
appears!
A fault or error has occurred.
The warning signal is constantly flashing,
To identify what the fault is
press the OK button.
The screen now displays the
fault code
Fault Code
or
Error Code
The code is understood as;
F0 = Fault
E0 = Error
Read on
-
the following table will identify
the fault code and inform what
action to take.
The number after the letter is the
reference for identifying the actions
required
The number below the flashing warn-
ing triangle informs how many faults
have been detected
FAULT CODE
DISPLAY SYMBOL
MESSAGE
ACTION
REMARKS and REFERENCES
A fault has been detected in the sensor
used to monitor the DHW temperature.
The HIU PID Controller automatically
defaults the diverter valve to heating
mode.
DHW is not available now until the error
has been resolved!
POTENTIAL CAUSES:
•
Sensor has FAILED broken)
•
Sensor detects a temperature > 70°C
•
Sensor is not properly connected in
the controller
•
Sensor is unplugged!!
•
Flush the unit with cold
water to reduce the
temperature detected by
the sensor.
•
Check connection of the
sensor cable at the
Controller. Reconnect and
check if error clears.
•
If error still shows replace
the sensor
-
ISOLATE THE
ELECTRICITY SUPPLY
•
Check the
‘
Ribbon Wire
Plug connecting the twp
boards. If it is not secure
the FO symbol will appear
DHW NTC TEMPERATURE SENSOR
Spare Part Ref
H10011SP
The sensor is to be found on the DHW
supply pipe between the PHE and the
high temperature safety mixing valve
(un
-
clip remove & disconnect)
The HIU PID Controller will
automatically reset to normal opera-
tion once the cause of the fault has
been corrected.
A fault has been detected in the central
heating flow temperature sensor .The
result is that central heating will not be
available as the HIU Controller will not
allow these functions until the fault is
rectified.
POTENTIAL CAUSES
•
Heating sensor is broken or
damaged
•
Heating sensor detects a
temperature > 110°C
•
Heating sensor is not properly
connected into the controller box
•
Heating sensor cable has FAILED
•
Check connection of the
sensor cable at the HIU PID
Controller. Reconnect and
check to see if error clears.
•
If error still shows replace
the sensor
-
ISOLATE THE
ELECTRICITY SUPPLY, TURN
OFF THE ISOLATION
VALVES, DRAIN THE HIU.
The HIU PID controller will
automatically reset to normal
operation once the cause of the
fault has been corrected.
TEMPERATURE SENSOR PT1000
Spare Part Ref
H10012SP
Measuring central Heating Flow
temperature. See page 23 for position
of this sensor. Isolate and drain all the
water from the HIU first
Disconnect and install a replacement.
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!
SECTION 9
-
Fault codes and fault finding
All work must be carried out by a trained and approved operator.
09/17 E & OE
Summary of Contents for Hiper Xi45 INDIRECT HIU 45DHW/10HTG
Page 28: ...09 17 E OE ...
