MHG Heating Ltd ©
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre Waterfield Tadworth Surrey KT20 5LR
Phone: 0845 6448802 Fax: 0845 6448803 Email:
010911
The ProCon range has two levels of fault code indication.
Automatic Resetting Fault Code.
A small fault code alternating with the time of day.
The appliance will stop operating for a limited period/until the error has been corrected.
Repeated occurrences of an Automatic Resetting Fault Codes will result in a Manual Reset
Fault Code.
Manual Reset Fault Code.
A large fault code is displayed on the screen along with the
symbol.
The appliance will stop operating until the error has been corrected and the RESET button
has been pressed.
PLEASE NOTE.
If the RESET button is pressed when a small fault code is displayed or no fault code is displayed the
unit will display a Manual Reset Fault Code of E153 will be displayed. The RESET button must be
pressed again to clear this code.
If a fault is encountered within the appliance or Cascade LPB network, a fault code will be
generated and displayed by the failing appliance and all LPB networked RVA and Opentherm units .
If a fault is encountered by a RVA controller or is communicated to a RVA controller via the LPB
network ER will be generated on the display.
Opening the controllers flap and pressing the Down PROG button twice will gain access to
parameter line 50 where the generated fault code can be reviewed.
In either case the fault code should be noted for future reference.
If the fault is related to a specific appliance the unit can be reset by pressing the Lockout Reset
Button.
If the fault is related to a RVA controller or the LPB communication network the fault code will
clear automatically following the rectification of the fault.
This is also applicable following the rectification of any appliance fault. This can take up to 10
minutes.
Fault Code
Description
E-0
No Error Detected
E-10
Outside Air Sensor Fault / Not Detected
E-20
Flow Water Sensor Fault / Not Detected
E-26
System Flow Sensor Faulty / Not Detected
E-28
Flue Gas Sensor Fault / Not Detected
E-40
Return Water Sensor Fault / Not Detected
E-46
System Return Water Sensor Fault / Not Detected
E-50
HWS Sensor Short Circuit 1
E-52
HWS Sensor Short Circuit 2 (Not Used)
