Before Beginning

You can avoid most problems by following the recommended installation and

maintenance procedures outlined in this User Guide. If you do have a problem,

this section will help you determine what caused it and how to fix it.

Before you start disassembling the HTC process air heater be sure to:

❏Diagnose causes from the control panel.

1Press the Acknowledge Alarm button to silence the alarm.
2Address the alarm message and fix the problem.
3Move the heater switch from Enable to Standby.
4Cycle the heater switch from Standby to Enable to restart normal con-
trol. If the alarm reappears the problem was not fixed.
If the alarm is a passive alarmyou will see Pin the screen title display.
If the alarm is a shut down alarmyou will see Ain the screen title
display.

❏Diagnose causes from the control panel.

You can locate any problem from the front of the heater.

HeatersStartup /ShutdownFor Startup:
1. With heaters in
Standby, turn on
blower or dryer.
2. Enable heaters.
For Shutdown:
1. Switch heaters to
Standby. 
2. Wait 60 seconds
before turning off
blower or dryer.
EnableStandby
Acknowledge
Alarm Button
Scroll
Button
6-2 l Troubleshooting