© MHG Heating Ltd
63
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
Web www.mhgheating.co.uk
140116
270
215 Temperature difference, heat exchanger too large
317
214 Mains frequency outside permissible range
320
217 DHW charging temperature, sensor error
321
217 DHW outlet temperature, sensor error
322
218 Water pressure 3 too high
323
218 Water pressure 3 too low
324
146 Input BX, same sensors
325
146 Input BX/extension module, same sensors
326
146 Input BX/mixing group, same sensors
327
146 Extension module, same function
328
146 Mixing group, same function
329
146 Extension module/mixing group, same function
330
146 Sensor input BX1 without function
331
146 Sensor input BX2 without function
332
146 Sensor input BX3 without function
333
146 Sensor input BX4 without function
335
146 Sensor input BX21 without function
336
146 Sensor input BX22 without function
339
146 Collector pump Q5 missing
340
146 Collector pump Q16 missing
341
146 Sensor B6 missing
349
146 Buffer storage tank return valve Y15 missing
350
146 Buffer storage tank address error
351
146 Primary controller/system pump, address error
352
146 Pressure-less header, address error
353
146 Sensor B10 missing
371
209 Flow temperature heating circuit 3
372
209 Temperature limiter heating circuit 3
373
103 Extension module 3
374
169 Sitherm Pro calculation
375
169 BV stepper motor
376
169 Drift test limit value
377
169 Drift test prevented
378
151 Internal repetition
382
129 Repetition speed
384
151 Extraneous light
385
151 Mains under-voltage
386
129 Fan speed tolerance
387
129 Air pressure tolerance
388
146 DHW sensor no function
426
151 Feedback flue gas damper
427
152 Configuration flue gas damper
429
218 Dynamic water pressure too high
430
218 Dynamic water pressure too low
431
217 Sensor primary heat exchanger
432
151 Function earth not connected
433
216 Temperature primary heat exchanger too high