Table 16 — EconoMi$er Troubleshooting
PROBLEM | CAUSE | REMEDY |
Damper does not open. | Indoor Fan is Off. | Check to ensure that 24 vac is present at Terminal C1 (Common Power) |
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| on the IFC (Indoor Fan contactor) or that 24 vac is present at |
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| the IFO (Indoor Fan On) terminal. Check whether 24 vac is |
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| present at PL (Plug) |
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| not present, check wiring (see unit label diagram). |
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| Check proper thermostat connection to G on the connection board. |
| No power to EconoMi$er | Check to ensure that 24 vac is present across Terminals 24 VAC and |
| controller. | 24V COM on the EconoMi$er control. If 24 vac is not present, check |
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| wiring (see unit label diagram). If 24 vac is present, STATUS light should |
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| be on constantly. |
| No power to G Terminal. | If IFM is on, check to ensure 24 vac is present on G Terminal of the |
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| EconoMi$er controller. If 24 vac is not present, check wiring (see unit |
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| label diagram). |
| Controller fault. | If STATUS light is flashing one flash, the EconoMi$er controller is |
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| experiencing a fault condition. Cycle power to the controller. If condition |
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| continues, replace the EconoMi$er controller. |
| Thermostat fault. | If STATUS light is flashing two flashes, the EconoMi$er controller senses |
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| the thermostat is wired incorrectly. Check wiring between the thermostat |
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| and the connection board in the electrical panel. The fault condition is |
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| caused by Y2 being energized before Y1. |
| Actuator Fault. | Check the wiring between the EconoMi$er controller and the actuator. |
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| Hold CONFIG button between three and ten seconds to verify the |
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| actuator’s operation. (This process takes three minutes to complete.) |
EconoMi$er operation limited | Minimum position set | Verify that the MIN POS (%) is set greater than zero. Adjust |
to minimum position. | incorrectly. | MIN POS (%) to 100% to verify operation, and then set to correct setting. |
| EconoMi$er changeover | Set at correct value. See Table 4. |
| set point set too high or |
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| too low. |
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| Supply air temperature | If STATUS light is flashing 4 flashes, the supply air temperature sensor is faulty. |
| sensor faulty. | Check wiring or replace sensor. |
| Outdoor air temperature sen- | If STATUS light is flashing 5 flashes, the |
| sor faulty. | Check wiring or replace sensor. |
Damper position | Supply air low limit | The supply air temperature is less than 45 F, causing the minimum |
less than minimum | strategy controlling. | position to decrease. Refer to the |
position set point. |
| setting of MIN POS (%). If correct, EconoMi$er is operating correctly. |
Damper does not return to | CO2 ventilation strategy | If a CO2 sensor is being used, and the damper position is greater than |
minimum position. | controlling. | minimum position, the ventilation control strategy is controlling. Refer to |
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| the |
Damper does not close on | Damper travel is | Check to ensure the damper is not blocked. |
power loss | restricted. |
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LEGEND
IFM —
OAT —