Worcester Greenstar Heatslave II External 12/18

During a DHW demand
(DHW flow >2 l/min
DCW in less than
40°C
DCW in greater than tank setpoint
minus (no demands offset + 2°C)
(for 2 seconds or more)
DCW in 80°C or
more (for 2
seconds or more)
DCW in below
79°C (for 2 sec
or more)
DCW in more than
40°C (but less
than 3 below)
(for 2 sec or more)
Normal DHW
operation
Burner OFF for
DHW 10 l/min &
above (burn
allowed for tank
reheat during
demand)
Burner OFF, pump OFF
(any tank reheat demand
suppressed until after
DHW demand ends)
DCW in less than tank
setpoint minus (no
demands offset + 3°C)
Burner OFF, pump OFF
Fault code 380 displayed
within service menu (i1)
l
l
l
l
1
2
3
4
Normal operation: the tank will cool more slowly for the same DHW performance if the DCW is above normal DCW temperature,
thus saving fuel.
Solar tank hot: therefore the burner will not be required at high DHW flow rate and the tank will boost the solar heated water if the
temperature drops.
Solar tank will satisfy the DHW requirements: therefore the appliance allows the water to pass straight through without taking any
action apart from monitoring the temperatures. To utilise the solar panels to their maximum potential, the solar tank thermostat
will need to be set high and the Heatslave II DHW setting low.
Solar tank overheat: DCW above solar tank limit, appliance will not operate pump or burner and fault code will be displayed within
the service menu.
Solar compatability
FAULT FINDING
& DIAGNOSIS
FAULT FINDING & DIAGNOSIS SOLAR COMPATABILITY
INSTALLATION & SERVICING INSTRUCTIONS FOR GREENSTAR HEATSLAVE II EXTERNAL 12/18-18/25-25/32
6 720 805 210-01
60
FAULT FINDING & DIAGNOSIS
SOLAR COMPATABILITY
1
2
3
4