Allmand Brothers MB 6200 - Manual (Page 58)

58
System Element Problem Probable Cause Corrective Action
Terminal has “PLEASE
WAIT” displayed
longer than 45 seconds Controller’s
FAIL-SAFE
FUSE has
blown. Replace FAIL-SAFE
FUSE. See figure 2 for
location. Cycle
MASTER POWER
switch (OFF for two
seconds then back ON.
If display remains
blank, refer to
Power
section in this
troubleshooting guide.
If problem remains,
replace HHT.
HHT, cont.
Faulty cable
between HHT
and SBC. Check cable and
connectors. Repair or
replace as necessary.
Only certain characters
can be entered on
keyboard Keyboard
contaminated. Replace HHT.
Display blank when it
should show
information. Controller
halted
operation. Check Controller’s
FAIL-SAFE FUSE See
figure 2 for location.
Reset FAIL-SAFE
circuit breaker, if
tripped.
Reset controller by
turning MAIN
POWER Switch to
OFF position, wait 30
seconds, then turn to
ON position.
Temperature. Warm HHT to 32°F
(0°C) and recycle
power by placing
MAIN POWER Switch
to OFF, then ON
position.