Potterton iHE 100/300, Installation And Servicing Instructions

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iHE 36
153 Unit manually locked Reset button stuck in
160 Fan speed threshold not reached Required fan speed not reached - Faulty fan unit
171 Alarm contact 1 active Condensate blockage
172 Alarm contact 2 active Alarm 2 activated (not con fi gured)
173 Alarm contact 3 active Alarm 3 activated (not con fi gured)
174 Alarm contact 4 active Alarm 4 activated (not con fi gured)
217 Sensor error Ionisation current fault.
317 Mains frequency outside permissable range Check electrical installaiton
320 DHW Charging temperature, sensor error Check connections and / or replace faulty sensor (B36)
324 Input BX, same sensors BX sensor duplicated - check parameters
325 Input BX/extension module, same sensors BX extension module sensor duplicated - check parameters
326 Input BX/mixing group, same sensors Bx Mixing Circuit sensor duplicated - check parameters
327
Extension module, same function Extension Modules duplicated - check parameters
330 Sensor input BX1 without function BX1 connected but not de fi ned - check parameters
331 Sensor input BX2 without function BX2 connected but not de fi ned - check parameters
332 Sensor input BX3 without function BX3 connected but not de fi ned - check parameters
333 Sensor input BX4 without function BX4 connected but not de fi ned - check parameters
335 Sensor input BX21 without function BX21 connected but not de fi ned - check parameters
336 Sensor input BX22 without function BX22 connected but not de fi ned - check parameters
351 Primary controller/system pump, address error Htg Pump (Q14) not con fi gured on PCB1
353 Cascade fl ow sensor B10 missing Check connections and con fi guration of sensor (B10)
384 Extraneous Light Ionisation current detected before ignition
385 Mains under voltage Mains voltage below 185v - check installation
386 Fan speed tolerance Fan outside allowed speed tolerance level - replace fan
388 DHW sensor no function Tank temperature sensor not con fi gured (B3)
432 Function earth not connected No Ignition earth, X1 / X17 not connected or earth fault
NA Operating mode button locked - Cannot operate Remote system enable operating. Check Link terminals
in DHW or Heating mode (No fault code displayed)
Code Fault Description Notes
Table 3.0
FAULT CODES (CONTINUED)