OWNER’S MANUAL
MODEL DH1-1010 SERIES – HEATED HOLDING UNIT
174830 RV101917
Copyright © 2017 Marshall Air Systems, Inc.
All Rights Reserved.
7
PROBLEM
POSSIBLE CAUSE
SOLUTION
9. ERROR CODE
“SHT”
“uP” OR “LO”
“SHORTED
TEMPERATURE
SENSOR”
“uP” UPPER DECK OR
“LO” LOWER DECK
A. TEMPERATURE
WIRES ARE
SHORTED
A. CHECK WIRES
B. BAD SENSOR
B. REPLACE SENSOR
C. BAD CONTROLLER
C. REPLACE CONTROLLER
10. TIMER COLOR LEDS
NOT ILLUMINATING
A. BAD CONTROLLER
A. REPLACE CONTROLLER
11. ERROR “
dft” ON
POWER UP
A. INTERNAL MEMORY
DAMAGED
A. REPLACE CONTROLLER
12. CABINET FAN NOT
WORKING
A. NO VOLTAGE TO FAN
A. CHECK WIRING
B. BAD FAN
B. REPLACE FAN
**
NOTE
: When replacing sensor, a special heat sink sealant will be present when removing failed
sensor. Applying new sealant is not required; however, be sure to utilize existing sealant
when mounting new sensor.
