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820900-UUM-A-1011
6 Johnson Controls Unitary Products
TABLE 1: TROUBLE SHOOTING GUIDE
PROBLEM CORRECTION
NO HEAT
Check thermostat for proper setting
Check circuit breaker and fuses.
Check filters.
Call qualified service man.
NOT ENOUGH HEAT -
OUTDOOR UNIT
NOT RUNNING
Check thermostat for proper setting.
Check circuit breaker and fuses.
Switch thermostat to Emergency Heat position.
Call qualified service man.
NO COOLING
Check thermostat for proper setting.
Check circuit breaker and fuses.
Check filters.
Call qualified service man.
ELECTRICAL
POWER
INTERRUPTION
(ice, snow, or
wind storms)
Procedure Heating Season:
1. Switch thermostat to Emergency Heat.*
2. Leave Emergency Heat on for at least 12 hours after electrical power is re-established.
3. Switch thermostat back to Heating or Auto.
Procedure Cooling Season:
1. Switch thermostat to Off position.
2. Do not switch to Cooling or Auto until electrical power has been re-established for 4 hours.
*There will be no heat available until power is re-established