What to do if a fault occurs

Faulty function in 4-way valve

Possible cause 1: Four-way valve does not work properly.

Action:1. Select Acknowledge.

2. Contact your dealer at repeated alarms.

T6 High hot gas temperature

Possible cause 1: The working temperature of the compressor is too

 

high.

Action:

1.

Select Acknowledge.

 

2.

Contact your dealer at repeated alarms.

Possible cause 2: Intermittent temperature rise due to abnormal

 

operating conditions.

Action:

1.

Select Acknowledge.

 

2.

Wait and see. Contact your dealer at repeated alarms.

Fault on electric additional heat (290 A/W, electric cassette)

Possible cause 1: Additional heat overheat protection has tripped.

Action:

1.

Select Acknowledge.

 

2.

Reset the overheat protection on the additional heat.

 

3.

Contact your dealer at repeated alarms.

Fault on additional heat for heating system (electric/oil-fired boiler)

Possible cause 1: Additional heater overheat protection has tripped.

Action:

1.

Select Acknowledge.

 

2.

Reset the overheat protection on the additional heat.

 

3.

Contact your dealer at repeated alarms.

T8 High flow temperature

There is a sensor, T8, in the heat pump, which for reasons of safety, stops the compressor if the flow temperature becomes higher than the set value.

Possible cause 1: Not enough flow over the heat pump.

Action:

1.

Check that the heat carrier pump has not jammed (see

 

 

Tripped high pressure switch).

 

2.

Check that all the valves are open. In heating systems

 

 

with thermostat valves these should be fully open and

 

 

in underfloor heating systems at least half of the coils

 

 

should be fully open.

Possible cause 2: Particle filter is clogged.

Action:

1. Clean the particle filter, see Maintenance.

 

 

 

 

 

 

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Optima Company 600 - 1700 manual Faulty function in 4-way valve, T6 High hot gas temperature, T8 High flow temperature

600 - 1700 specifications

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