PUREGAS, LLC
P6500W Air Dryer User’s Guide
Page 79 of 88
P010452 – Rev. Q
13.12 Can’t Create a High Humidity Alarm / Shutdown
These troubleshooting steps assume that the Humitter is removed from the
Humidity Block during the
Testing Humidity Alarm and System Shutdown
(section 9.13 ) procedures.
Possible Cause
Check
Corrective Action
Humitter Cable
disconnected
Verify that Humitter
cable is connected
through to the Control
Board
Connect Humitter cable
Defective Humitter
Verify that Humidity
reading fails to climb
higher than 15% or
creates sporadic
readings
Replace Humitter
(section 11.3 )
Defective Control Board Verify that Humidity
reading is over 15% for
more than 1 minute
Replace Control Board
if no alarm is created
and system does not shut
down (section 11.1 )
13.13 Compressor Doesn’t Operate
Possible Cause
Check
Corrective Action
Defective compressor
Measure voltage to
compressor
(section 9.3 )
If voltage is between
210 – 230 VAC, replace
compressor (section
11.4 )
or send it in for repair
(section 12. )
Insufficient power to
compressor
Measure voltage to
compressor
(section 9.3 )
If voltage is present, but
less than 210 VAC,
engage Boost
Transformer (section
8.14 )
No power to compressor Measure voltage to
compressor
(section 9.3 )
If voltage is not present
or fluctuates, continue to
next Possible Cause
Defective Solid State
Relay
Measure voltages at
Solid State Relay
(section 9.5 )
If measurements are
bad, replace Solid State
Relay (section 11.1 )
System is in Shutdown
state
On the Display Panel,
verify that neither
System is in Shutdown
state
Press the
RESET
Button
Summary of Contents for P6500W
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