12
LIST OF SYSTEM ERRORS AND FAULTS
ITEM
POSSIBLE CAUSE
ACTION
Outgoing glycol
temperature sensor
Temperature sensor or connection
failure.
Contact customer service.
When the problem is resolved, the error
disappears automatically.
Outgoing heating
water temperature
sensor
Temperature sensor or connection
failure.
Contact customer service.
When the problem is resolved, the error
disappears automatically.
Incoming heating
water temperature
sensor
Temperature sensor or connection
failure.
Contact customer service.
When the problem is resolved, the error
disappears automatically.
Water heater
temperature sensor
Temperature sensor or connection
failure.
Contact customer service.
When the problem is resolved, the error
disappears automatically.
Room temperature
sensor
Temperature sensor or connection
failure.
Contact customer service.
When the problem is resolved, the error
disappears automatically.
Outdoor temperature
sensor
Temperature sensor or connection
failure.
Contact customer service.
When the problem is resolved, the error
disappears automatically.
LP low pressure
Low refrigerant pressure during
operation.
Clean the outdoor circuit filter. Check that
the outdoor circuit pump is operating
properly. Check for air in the outdoor
circuit system. Possible freon deficiency.
Low glycol flow in the outdoor circuit.
Check the heating water pressure in the
outdoor circuit, rate 1-2 bar. Clean the dirt
trap. If the problem persists, contact
customer service.
HP high pressure
High refrigerant pressure during
operation.
Clean the internal circuit filter. Check that
the internal circuit pump is operating
properly. Check for air in the internal
circuit system.
Low heating water flow in the internal
circuit.
Check the heating water pressure in the
internal circuit, rate 1-2 bar. Clean the dirt
trap. If the problem persists, contact
customer service.
Hot water preparation
time too long
Three-way valve failure.
Contact customer service.
