820900-UUM-A-1011

TABLE 1: TROUBLE SHOOTING GUIDE

PROBLEM

CORRECTION

 

 

 

Check thermostat for proper setting

NO HEAT

Check circuit breaker and fuses.

Check filters.

 

 

Call qualified service man.

 

 

NOT ENOUGH HEAT -

Check thermostat for proper setting.

Check circuit breaker and fuses.

OUTDOOR UNIT

Switch thermostat to Emergency Heat position.

NOT RUNNING

Call qualified service man.

 

 

 

 

Check thermostat for proper setting.

NO COOLING

Check circuit breaker and fuses.

Check filters.

 

 

Call qualified service man.

 

 

ELECTRICAL

Procedure Heating Season:

1. Switch thermostat to Emergency Heat.*

POWER

2. Leave Emergency Heat on for at least 12 hours after electrical power is re-established.

INTERRUPTION

3. Switch thermostat back to Heating or Auto.

(ice, snow, or

Procedure Cooling Season:

wind storms)

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

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Johnson Controls Unitary Products

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Johnson Controls 820900-UUM-A-1011 manual Trouble Shooting Guide, Problem Correction