Owners Manual Ecos
aire
®
CM Series Precision Air Conditioner
Ecos
aire
®
July 2007 105
Data subject to change without notice.
Diagnostics
Operation
OPERA
TION
CHECKS
1. Check heaters for operation.
2. Have a qualified HVAC engineer
check that the unit heater
capacity is adequate to the load.
3. Check for changes in heating
load since design stage.
1. Heating Band may too small.
2. Integral term may be too small.
1. Have a qualified HVAC engineer
check that the unit cooling
capacity is adequate to the load.
2. Check for changes in cooling
load since design stage.
3. If the cooling capacity is
adequate, check the magnitude
of the cooling band.
1. Heating Band may too small.
2. Integral term may be too small.
CORRECTIONS
•
Correct as necessary.
•
If the heating capacity is not sufficient, contact
factory for solutions.
•
Close any doors or windows that have been left
open.
•
Check for excessive makeup airflow.
•
Contact factory.
•
If the cooling capacity is not sufficient, contact
factory for solutions.
•
Close any doors or windows that have been left
open.
•
Check for excessive makeup airflow.
•
Contact factory.
•
Contact factory.
SYMPTOM
In heating mode the
room air temperature does
not rise to the set point in
cold weather.
In heating mode, the
room temperature repeat-
edly rises above set point,
then falls below it.
In cooling mode, the room
temperature does not
decrease to set point.
In heating mode, the
room temperature repeat-
edly rises above set point,
then falls below it.
