Troubleshooting - Alto-Shaam 300-S Installation Operation & Maintenance

Troubleshooting

Thermostat Accuracy
To verify that the compartment temperature matches
the temperature displayed on the controller:
1. Ensure the appliance voltage matches the power
source.
2. With the exception of the wire shelves, completely
empty the holding cabinet.
3. Ensure the air temperature sensor, located inside the
holding compartment is completely clean.
4. Suspend a quality thermometer from the center of
the holding compartment.
5. Close cabinet door and set the holding temperature
anywhere between 60˚F and 200˚F (16˚C to 93˚C).
6. Allow the temperature to stabilize for a minimum of
one hour.
Do not open the cabinet door(s) during the
temperature stabilization period.
7. Compare the temperature displayed on the
controller with the reading on the thermometer.
If the reading on the thermometer does not match
the temperature on the controller, the air sensor may
be faulty.
Always verify that the circuit breaker is turned to the On position and your appliance is receiving power before
calling your authorized Alto-Shaam Service Agent.
This section is provided for the assistance of qualified and trained service technicians only and is not intended for
use by untrained or unauthorized service personnel. Do not attempt to repair or service the oven beyond this point.
Contact Alto-Shaam for the nearest authorized service agent. Repairs made by any other service agents without prior
authorization by Alto-Shaam will void the warranty.
WARNING
To prevent serious injury, death, or property
damage, always disconnect the appliance
from the power source before cleaning
or servicing.
30
NOTICE
MN-29423 • Rev 6 • 02/18 • S-Series Hot Food Holding Cabinets
How to verify sensor integrity
Place the sensor in ice water. Test with an ohmmeter set
to the ohm scale.
Air sensor
Air sensor (Deluxe control)
If the reading is more or less than above parameters,
replace sensor.
1000 ohms ± 20
100 ohms ± 2