Error Codes                                29 - Aprilaire S84N 1H1C Safety & Installation Instructions

FAN DOES NOT TURN ON IN A CALL FOR HEAT
• Check System Setting (Fan Control in
Heating), to make sure the fan control is
properly set to match the type of system
(see page 17)
HEAT PUMP ISSUES COOL AIR IN HEAT MODE,
OR WARM AIR IN COOL MODE (S84N SU ONLY)
• Check System Setting (O/B Operation) to
make sure the reversing valve operation
matches the heat pump
HEAT/COOL BOTH ON AT SAME TIME
• Check System Setting (Equipment Type), to
make sure it is set to match the installed
heating/cooling equipment (see page 17)
• Check to make sure heating and cooling
wires are not shorted together
28
HEATING EQUIPMENT IS RUNNING IN COOL
MODE
• Check System Setting (Equipment Type), to
make sure it is set to match the installed
heating/cooling equipment (see page 17)
"HEATING" IS NOT DISPLAYED
• Check System Setting (Control Setup) is set
correctly
• Change the System Mode to Heat, and set
the temperature level above the current
room temperature
"COOLING" IS NOT DISPLAYED
• Check System Setting (Control Setup) is set
correctly
• Change the System Mode to Cool, and set
the temperature level below the current
room temperature
ERROR CODES
If the thermostat enters an error mode, all outputs are turned off The thermostat attempts to
recover every 10 minutes
Error Code Message
E01 & E02 Sensor Error
E03
EEPROM Error
E06
Remote Sensor Error
E07
Remote Sensor Error
Error Description
Internal temperature sensor failure
Error in permanent memory
Open remote temperature sensor circuit
Shorted remote temperature sensor circuit
29