Heating, Ventilation, Air Conditioning (Hvac) - Troubleshooting - Case 570T Operator's Manual

Heating, ventilation, air conditioning (HVAC) - Troubleshooting

Problem
Dust enters the cab
Blower motor air flow low Blocked filter or recirculation filter
Blower motor not working Fuse blown
Cabin does not heat up
Cabin does not cool
Temperature not stable
8 - TROUBLESHOOTING
Possible Cause
Improper seal around filter element
Blocked filter
Defective filter
Excessive air leak(s) around doors and
windows
Heater radiator core blocked
Engine not reaching operating tempera-
ture. Thermostat stuck open
Heater hose from engine to cab radiator,
kinked or blocked
Heater control turned on
Heater control valve stuck in open position Free up valve or change as required
Low engine coolant
Check seal condition
Clean or replace filter
Replace filter
Repair and seal air leak(s)
Clean or replace filter(s)
Clean radiator core thoroughly
Replace fuse
Replace thermostat
Ensure water flow to heater radiator is ad-
equate and not restricted
Turn the temperature control knob fully
counterclockwise for maximum cooling
Top up coolant recovery tank
8-17
Correction