© MHG Heating Ltd
MHG Heating Ltd, Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey, KT20 5LR
P:0845 6448802 F:0845 6448803 E:
W: www.mhgheating.co.uk
010617
54
9055
State multifunctional relay (QX23
Module 2)
-------
State 2nd speed heating circuit pump
(Q21)
-------
Operating mode changeover heating
circuit 1
Inactive
State 2nd speed heating circuit pump
(Q22)
-------
Operating mode changeover heating
circuit 2
Inactive
State heating circuit pump 3/P
-------
Stat 2nd speed heating circuit pump
(Q23)
-------
Operating mode changeover HC3/P
Inactive
State DHW circulating pump (Q4)
-------
State electric immersion heater DHW
-------
Operating mode changeover DHW
Off
Flowswitch
Off
State pump H1 (Q15)
-------
State pump H2 (Q18)
-------
Status primary pump (Q14)
-------
Status precontroller mixing valve
opens (Y19)
-------
Status precontroller mixing valve
closes (Y20)
-------
Output heat generation lock (Y4)
-------
Status time program 5 relais (K13)
-------
Status return temp valve (Y15)
-------
Status heat demand (K27)
-------
Status cool demand (K28)
-------
State air dehumidifier (K29)
-------
Status DHW charging controller Y31
-------
Status DHW charging controller Y32
-------
Status instantaneous heater pump
(Q34)
-------
Status instantaneous heater opens
(Y33)
-------
Status instantaneous heater closes
(Y34)
-------
State storage transfer pump (Q11)
-------
State DHW stirring pump (Q35)
-------
DHW intermediate circuit pump (Q33)
-------
Info
6700
Error signal
Error origin
Error signal 2
Error origin
