14
Appendix 1
Fault Codes
The Error Check display area of the LCD display may, in the event of a fault, show the
symbol of a spanner and a fault code. This is a list of fault codes in order for you to
advise your service and maintenance engineer of the likely problem. Not all faults will
generate a fault code. Faults are divided into two types as below.
Recoverable Errors—P Codes
These faults will not always stop the unit but will affect its performance. They will clear
if the problem resolves itself.
Critical Errors—E Codes
These will cause the unit to shut down and should be investigated by an engineer as
soon as possible.
Code
Ty pe
Meaning
Action
Likely Cause
Pr01
Recov erable
Indoor Unit Pipe Sensor Fault
Repair
Faulty Sensor
Pr02
Recov erable
Outdoor Unit Pipe Sensor Fault
Repair
Faulty Sensor
Pr03
Recov erable
Indoor Unit Freezing
Inv estigate
Dirty Filter or Set Temp Low
Pr04
Recov erable
Ov erload Condition in Cooling
Inv estigate
Outdoor Unit Obstructed
Pr05
Recov erable
Outdoor Discharge Sensor Fault
Repair
Faulty Sensor
Pr06
Recov erable
Indoor Unit Air Sensor Fault
Repair
Faulty Sensor
Pr08
Recov erable
Indoor Unit Ov erheating
Inv estigate
Dirty Filter or Set Temp High
Pr11
Recov erable
Drain Pump Struggling to Cope
Inv estigate
Partially Blocked Drains
Eo00
Critical
Comms Fail Indoor to Control
Repair
Broken Cable or Interference
Eo03
Critical
Electrical Phase Problem
Repair
Pow er Supply Problem
Er04
Critical
High Pressure Sw itch Trip
Repair
Safety Dev ice Tripped
Er05
Critical
Low Pressure Sw itch Trip
Repair
Safety Dev ice Tripped
Er06
Critical
High Discharge Temperature
Repair
Safety Dev ice Tripped
Er07
Critical
Ov ercurrent Protection Tripped
Repair
Safety Dev ice Tripped
Er08
Critical
Comms Fail Indoor to Outdoor
Repair
Broken Cable or Interference
Er11
Critical
Drainage Failure
Repair
Blocked Drains
Er12
Critical
Electric Heater Ov erheat
Repair
Safety Dev ice Tripped
Explanation of Actions
•
Investigate—Non Critical Failure Requiring Investigation by an engineer
•
Repair—Critical Failure Requiring Investigation by an engineer
In the case of a Pr03 or Pr08 failure investigate yourself by checking the condition of the
filter and cleaning if necessary. Prolonged operation in cooling with a set temperature below
21C or heating above 26C can also cause these conditions.
In case of a Pr04 failure investigate yourself whether the outdoor unit airflow is obstructed.
3
Flap Closed
Flap Open
Status LED
Operation
IR
Receiver
General Description
The controller has a Backlit Liquid Crystal Display Section, Status
LED and Operation Switch mounted on the top half. The lower
half is covered by a swing open flap.
Opening the flap reveals the control buttons. These are used to
operate the unit. The buttons with a yellow border control the
timer operation and the others control the units other functions.
Please Ensure -
•
Do not operate the controller with wet hands
•
Do not press multiple buttons simultaneously
•
Do not press the buttons with sharp objects
•
Ensure the Correct Button is Pressed
•
Ensure all settings are in accordance with the Units User Manual
•
Do not get the controller wet
