- Apex Generator User Manual
5708009-C 6-7
Apex 1 to 5.5 kW Generator
If you answered yes to any one of the previous questions and the Apex passed the 
Internal Diagnostics test, the Apex is probably working properly and it may be 
reacting to an external load condition. You may want to consult your Process Engineer 
or system manufacturer to troubleshoot chamber related issues.
ERROR CODES
Error codes indicate a fault condition and report the most recent active error or alarm 
condition from the Apex unit. You can able to view error codes through a serial 
communication port such as RS-232. Another way to view error codes is through the 
Virtual Front Panel which provides an easy way to control an Apex generator through 
a personal computer. Call AE Global Support for information. The following table 
explains the specific error code meanings and solutions.
Table 6-1. Error Code Table
Error Code Error Code Description Solution
E000 No Error
E001
Out of setpoint 
timer expired
If the unit is unable to reach or maintain the 
programmed output level within a specified amount 
of time, the output shuts off and this error code is 
reported. This timer is enabled and set through the 
serial communications port. 
To avoid this error, 
you can disable the 
timer, increase the 
amount of allowable 
time, or try to 
determine why the 
unit is not reaching 
setpoint. See “Power 
Limit LED is Lit” on 
page 6-5. 
To clear this error 
code, you must send 
an RF OFF command 
to reset the Apex 
unit.
E004
Over 
Temperature 
Shutdown
 This error is the same as when the Overtemp LED 
is on solid, 
See “Overtemp LED 
on Solid” on 
page 6-4.










