Heating - Potterton iHE 100/300 Installation And Servicing Instructions

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