Specifications

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6720649497 SM HP270-1 2012/09 en
Code E07 – Only for internal technical use
Code E08 – Only for internal technical use
Code E09 Lock Out Error
ONLY FOR models, produced till February 2012
Failure in Compressor System
Condition: Appliance was turned on, is in standby and fault was displayed before operation
1 Contacts Open on safety elements - thermal protection Check Continuity
2 Contacts Open on safety elements – high pressure switch Check Continuity
3 Contacts Open on safety elements – low pressure switch Check Continuity
High Pressure Switch Activation
Condition: After first start up of system, fault is displayed after HP start operation
4 Water pump operation is noisy
Check air presence in the sanitary side / pump
and purge it
5 Circulation pump is not working
Check pump connection and its operation -
Unblock the pump impeller through the front
screw.
Condition: Appliance blocks after some running time
6 Water flow through condenser is too low
Check eventual calc or debris deposition in the
sanitary side of the condenser plate heat
exchanger and clean it.
7 Water shortage >12h
8 After a repair and / or R134 replacement
Too much refrigerant inside circuit (max. 375 g).
Rework charging procedure.
Code E10 Lock Out Error
Fault in the electrical backup resistance (by current sensor in control unit)
1 Activation of the safety thermostat (over temperature)
Reset thermostat manually
(check adjusted temperature – must be at
maximum position “+” aprox. 80ºC)
In case of appliance with internal coil, check
water temperature from the backup system
(solar, boiler, …) – must be < 80ºC
2
In case of repetitive error, drain water and disassemble
resistance.
Calc deposition over resistance surface avoids
thermal dissipation and consequent over
temperature detection.
Resistance malfunction.
Code E11 Lock Out Error
ONLY
FOR
models
produced from
March
2012 on
Failure in Compressor System
Condition: Appliance was turned on, is in standby and fault was displayed before operation
1 Contacts Open on safety elements - thermal protection Check Continuity