Troubleshooting; Overload Temperature Limiting Device - Dantherm iA/C T Series Information Manual

iA/C T-Series Installation, Operating & Maintenance Manual
6.6

Troubleshooting

The air conditioners are designed for trouble free life as long as the ambient filter (if applicable) is maintained
in a clean condition. To aid in service definition the service personnel can initially identify probable cause by
referring to the following trouble shooting chart.
If in doubt contact Dantherm Air Handling Inc. for assistance. Always have the Model #, Serial #
available before you call.
Problem
Unit not running
Unit not cooling
sufficiently
Ice on evaporator coil
Condensate draining
continuously
Excessive vibration
Missing Compressor
Current (F=01)
High Pressure Alarm
(F=02)
Low Pressure Alarm after
start (F=03)
Low Pressure Alarm
before start (F=04)
High Temperature Alarm
(F=05)
Low Temperature Alarm
(F=06)
Faulty Temperature
Sensor (F=07)
6.7

Overload Temperature Limiting Device

The overload temperature limiting device is located near the heater element, behind the evaporator coil.
Remove the top cover to access and reset the overload device.
AC-10 iAC 10K 12K Manual Rev D
Potential Cause
No Power
Fuse Blown on Control Board
Faulty control components
Filter (if applicable) clogged
Blocked evaporator or
condenser coil
Evaporator or condenser
blower not operating
Loss of refrigerant or oil leaks
Insufficient capacity
Insufficient heat load or unit
oversized for application
Failed evaporator blower
Enclosure not properly sealed
Loose compressor, fans or
tubing
Wire detached or improperly
installed
Broken current sensor
Faulty compressor
Faulty condenser fan or wiring
loose
Faulty condenser fan capacitor
or wiring loose
Faulty condenser fan switch or
high pressure switch
Slow leak in system
No refrigerant in system
(Large leak)
Low charge in system
Unit undersized for application
Insufficient heat load or unit
oversized for application
Sensor not connected
Faulty sensor
Solution
Check power source and electrical
connections
Replace with fuse
Carry out self test
Clean or replace filter
Clean coil
Replace motor, capacitor or entire
assembly
Locate and repair leak. Replace
charge
Contact Dantherm Air Handling, Inc.
Contact Dantherm Air Handling, Inc.
Replace evaporator blower motor or
assembly
Check and seal all openings
Locate and correct
Secure wiring or install wiring
properly according to diagram
Replace Control Board
Replace compressor
Replace fan or check wiring to fan
Replace capacitor or check wiring
to capacitor
Replace appropriate switch
Locate and repair leak. Replace
charge
Locate and repair leak. Replace
charge
Locate and repair leak. Replace
charge
Contact Dantherm Air Handling, Inc.
Contact Dantherm Air Handling, Inc.
Reconnect sensor
Replace sensor
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