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Hitachi SRL Series Instruction Manual page 35

Oilfree scroll compressor
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Troubleshooting (continued)
Digital Display Error and Alarm Indications (Default function)
Digital Display
Display
Error/Alarm Description
̲
M i d d l e s c r o l l h e a d h i g h
E.TP.
temperature error
L o w e r s c r o l l h e a d h i g h
̲
E.TP.
temperature error
A l l s c r o l l h e a d s h i g h
̲
̲
E.TP.
t e m p e r a t u r e
(7.5/11M6)
̲ ̲
A l l s c r o l l h e a d s h i g h
̲
E.TP.
temperature error (16.5M6)
Ambient temperature sensor
E.TS.A
error
̲
U p p e r
s c r o l l
E.TS.
temperature sensor error
̲
M i d d l e
s c r o l l
E.TS.
temperature sensor error
L o w e r
s c r o l l
̲
E.TS.
temperature sensor error
̲
̲
All scroll heads temperature
E.TS.
sensor error (7.5/11M6)
̲ ̲
All scroll heads temperature
̲
E.TS.
sensor error (16.5M6)
̲
Upper main motor excessive
E.CY.
ON-OFF cycle frequency
̲
Middle main motor excessive
E.CY.
ON-OFF cycle frequency
Lower main motor excessive
̲
E.CY.
ON-OFF cycle frequency
All main motors excessive
̲
̲
E.CY.
ON-OFF cyc le fre quency
(7.5/11M6)
All main motors excessive
̲ ̲
̲
E.CY.
ON-OFF cyc le fre quency
(16.5M6)
Verify that the ambient temperature is below 104
°
F. Turn off the main power supply to reset the
air compressor and turn the power back on. If
the error re-occurs and the ambient temperature
is below 104
e r r o r
distributor.
h e a d
h e a d
Check the temperature sensors and the wiring to
verify that they are not broken and the connectors
are not disconnected. Reset the air compressor
and if the error re-occurs, contact the local Hitachi
h e a d
distributor.
Turn off the main power supply to reset the air
compressor and turn the power back on. Reset
the pressure bandwidth in order to lower the
frequency of ON-OFF cycles.
31
Corrective Action
° F, contact the local Hitachi

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