17
Safety Devices
Name of
safety device
Product state
Function
Error
Display
Corrective
action when
safety device
activates
Compressor Pump
Compressor
overcurrent
relay
(RKS400F1)
Off Off
The device will activate where there is a
problem or overcurrent condition with the
compressor motor.
If activated, the electric circuit will be cut off and
the compressor operation to be stopped.
E01
Please refer
to Page 29,
“Troubleshoot
ing”.
Motor
protector
(RKS250F1-S)
Compressor
overload
protector
(RKS400F1)
Off
Off
This safety function will be activated if there is
an abnormal overheat condition in the
compressor due to high ambient temperature,
gas leak, etc. and will cause the electric circuit
to be cut off and the compressor operation to
be stopped.
Motor
protector
(RKS250F1-S)
High pressure
switch
Off
Off
This safety function will be activated if there is
an abnormal rise in refrigerant temperature
due to high ambient temperature, or restriction
or other trouble with the fan motor, and will
cause the electric circuit to be cut off and
product operation to stop.
E02
Compressor
intake
temperature
sensor
Off Off
This safety function will be activated if there is
an abnormal drop in the temperature of the
refrigerant returning to the compressor due to
the water quantity being low, or times when
pump operation is not working, and will cause
the electric circuit to be cut off and product
operation to stop.
E04
Fuse
Off
Off
If there is an overcurrent condition in the
control circuit, the control circuit will be cut off,
and the entire product will shut down.
E09
none
※
If any one of the above errors is indicated, the operation signal is turned off and the alarm signal is
output instead.
If an error not listed in above table, refer to Page 29, “Troubleshooting”.
The product operation can be stopped by two or more errors. Thus, you must check the error number
every time pressing the reset switch.
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