Diagnostics; Heat Pump Fault Diagnostic Condition - Air Energy AE-Ti Manual De Instalación Y Operación

Page 34
8.2

Diagnostics

In the event a pressure switch opens or another
fault condition occurs, the LCD screen will display the
fault until the problem has been resolved.
DIAGNOSTIC CONDITION
FAULT-
LOW WATER FLOW
FAULT-
LOW REF PRESSURE
FAULT-
HIGH REF PRESSURE
FAULT-
HIGH WATER TEMP
FAULT-
SHORTED COIL SENSOR
-or-
FAULT-
OPEN COIL SENSOR
FAULT-
SHORTED WATER SENSOR
-or-
FAULT-
OPEN WATER SENSOR
Table 5.

Heat Pump Fault Diagnostic Condition

Please refer to the following table for the list of
diagnostic conditions.
Low or restricted water flow through the heat pump.
The external bypass valve is in the wrong position, or the water
flow switch has malfunctioned. The water flow switch opens creating
a fault and the heat pump shuts off.
When the ambient temperature is low, the suction pressure can
drop significantly.
This fault will cause the low pressure switch to open and the control
will shut off the compressor.
When the head pressure builds too high, the high pressure switch
will open causing the heat pump to shut off immediately.
The control will sense this fault condition and shut off the
compressor until the switch re-closes.
When the POOL or SPA water temperature heats to the maximum
allowed temperature or above, there could be safety risks for
anyone in the water.
The water thermostat will read this temperature and the control will
shut off the heat pump unless it is in CHILLER mode.
This feature also remains active when the control calls for
heat through a remote thermostat. This is to insure that water
temperature does not go to an abnormally high level due to a
possible malfunction of the remote sensor.
In the event that the coil temperature sensor malfunctions or is not
connected the control will shut off the heat pump.
In the event that the water temperature sensor malfunctions or is
not connected the control will shut off the heat pump.
DESCRIPTION