Conair Hopper Temperature Controller UGD031 - Manual (Page 68)

6 - 4 l Tr o u b l e s h o o t i n g
H o w t o I d e n t i f y t h e C a u s e o f a
P r o b l e m
Most heater malfunctions are indicated by an illuminated Alarm light on the HTC
process air heater control panel.
A problem can trigger two types of alarms:
• Shut Down: The heater has automatically shut down because it detected a
serious problem that could damage your material or dryer.
• Passive: The heater continues to operate, but warns of a problem that could
prevent correct heating of your material. If ignored, this problem could lead to
a condition that will shut down the dryer.
When the alarm light is displayed:
1 Press the Acknowledge Alarm button to silence the alarm (see page
4-2).
2 Find the error message in the diagnostics table of this Troubleshooting
section.
3 Cycle the heater switch from Enable to Standby and then back to
Enable to clear and restart normal control. If the alarm reappears, the
problem was not fixed.
Heaters
Startup /
Shutdown
For 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.
Enable
Standby
Alarm Light
Acknowledge Alarm
Button