Ideal Heating i305, Installation & Servicing

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Installation and Servicing
SECTION 4 - FAULT FINDING
Code Fault Display Type/Action
1 CH Flow Thermistor Open Circuit F4 CH Valve to mid-position
2 CH Flow Thermistor Short Circuit F4 CH Valve to mid-position
3 CH Return Thermistor Open Circuit F5 Pump Modulation lost
4 CH Return Thermistor Short Circuit F5 Pump Modulation lost
5
CH Primary Return Thermistor Open/Short
Circuit
F8 Preheat Disabled
7 DHW Thermistor Open Circuit FC DHW Valve to closed position
8 DHW Thermistor Short Circuit FC DHW Valve to closed position
9 Outside Sensor Open Circuit F6
Reverts to max flow target
10 Water Pressure Sensor Fault F1 No CH operation
11 DHW Sensor disconnected from pipe FC DHW Valve to closed position
51 Low Water Pressure F1 No CH operation
63 High Mains Voltage N/A N/A
64 Low Mains Voltage F7 Blocking
65 OpenTherm Plus Fault (comms lost) Ft N/A
67 No Water Flow (from pump) FP Blocking CH
68 Pump Rotor Blocked FP Blocking CH
69 Low Voltage (from pump) FP Indication
70 Water Flow < 2l/min (from Pump) FP Blocking CH
71 Dry Run (from Pump) FP Blocking CH
72 Pump Warning Code FP Indication
94 PCB Fault (request for re-update) F9 Blocking
95
PCB Fault (blocking due to programming
Mode)
F9 Blocking
96 PCB Fault (lockout parameter mismatch) L9 Lockout
97 PCB Fault (parameter set fault) F9 Blocking
98 PCB Fault (Internal Blocking Error) F9 Blocking
99 PCB Fault (internal lockout) L9 Lockout
No Change detected in DHW or Flow Temp F2 Blocking
4.3 FAULT CODES - NUMERIC