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Pumps  
P1 and P2 
This option is not available when Mode (P100) is set to 6 = Volume. 
When P*210, 220, 230, 240, 250, 260 = 2 (Pump) 
When a relay  is  being  used  for  a  pump  function, the  second parameter 
determines  the  pump  duty  that  will  be  used  to  determine  the  operating 
cycle.  
P*211, P*221, P*231, P*241, P*251, P*261 - Relay Function, 
This parameter defines  which  pump duty  the relay  should  respond to as 
follows. 
Relay is always de-energised. 
All pumps are used to assist each other 
(run at the same time) and each pump 
has its own setpoints. (P*213, 223, 233, 
243, 253, 263 & P*214, 224, 234, 244, 
254, 264). 
If a pump fails to meet the demand (due 
to malfunction, intake blockage etc.), 
then it is stopped and another pump shall 
take over. Each pump has its own 
setpoints. (P*213, 223, 233, 243, 253, 
263 & P*214, 224, 234, 244, 254, 264). 
All pumps are used to assist each other 
(run at the same time). Each pump has 
its own setpoints, (P*213, 223, 233, 243, 
253, 263 & P*214, 224, 234, 244, 254, 
264) but each time all pumps have 
stopped, the setpoints are sequentially 
rotated between the pumps to ensure 
equal pump use.