MHG Heating Ltd ©
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre Waterfield Tadworth Surrey KT20 5LR
Phone: 0845 6448802 Fax: 0845 6448803 Email: info@mhgheating.co.uk
010911
E-58 HWS Volt Free Switch Fault / Not Detected
E-60 Faulty Room Sensor
E-61 Faulty Room Sensor
E-62 Incorrect Room Unit Connected
E-77 Air Pressure Sensor Not Detected (Not Used)
E-78 Water Pressure Sensor Defective (Not Used)
E-81 LPB Short Circuit (Boiler Cascade Wiring)
E-82 LPB Address Conflict (Boiler Cascade Settings)
E-86 Short Circuit on PPS Connection (Not Used in ProCon Configuration)
E-91 EEPROM
E-92 Hardware Malfunction
E-100 Conflict Between Time of Day Master Control (Boiler / QAA70 / RVA47)
E-105 Annual Service of Unit is Due. (QAA73 Service Tool Required to reset timer See Section 16.0)
E-110 Module Water Temperature Overheat
E-111 Module Temperature Too High (Auto Resetting)
E-113 Flue Gas Temperature overheat (Not Used)
E-117 High System Water Pressure Sensor (Not Used)
E-118 Low System Water Pressure Sensor (Not Used)
E-119 System Water Pressure Switch Activated (Below 0.8 bar)
E-124 Module Temperature Too High (Auto Resetting)
E-128 Flame Extinguished During Operation (LMU Version D)
E-129 Air Supply Error. Fan not operating at correct speed (LMU Version D)
E-130 Flue Temperature Too High (Auto Resetting)
E-131 Fault With Burner
E-132 External Safety Interlock Activated (Open Circuit)
E-133 No Flame Detected After Final Ignition Attempt
E-134 Flame Extinguished During Operation (LMU Version C)
E-135 Air Supply Error Fan not operating at correct speed (LMU Version C)
E-140 LPB Segment / Address Not Recognized (Boiler Cascade Settings)
E-142 LPB Missing Partner (Boiler Cascade Settings)
E-145 Wrong Device Connected to PPS Circuit (Not Used in ProCon Configuration)
E-146 Unrecognized Plant Configuration
E-147 Burner Modules Not Connected (PPS Circuit Not Used in ProCon Configuration )
E-148 LPB Interface Not Configured (Boiler Cascade Settings)
E-150 General Boiler Fault
E-151 Module LMU64 Controller Malfunction
E-152 Module LMU64 Controller Parameter Programming Error
E-153 Module Control Interlocked (The Reset button has been pressed when no fault code is present.)
E-154 Module Operating Outside of Predefined Parameters. (System Hydraulic Error.)
E-160 Fan Not Reaching Set Point
E-161 Module Combustion Fan Speed Too High
E-162 Air Pressure Switch Fault (Not Used)
E-164 Flow Switch / Pressure Switch Open (Not Used)
E-166 Air Pressure Switch Fault (Not Used)
E-180 Module Operating in Chimney Mode 100% Output
E-181 Module Operating in Commissioning Mode
E-183 Module Controller / QAA73 Room Unit in Parameter Setting Mode
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