47
8. OPERATION ANOMALIES
8.1. GENERAL ANOMALIES
Anomaly
Cause
Solution
Diffi cult to start.
Reduced power supply voltage.
Insuffi cient static torque of motor.
Check motor specifi cation plate.
Close the air inlets to reach the maximum
speed.Change the motor is necessary.
Contact the
S&P
Post-Sales service.
Insuffi cient airfl ow.
Insuffi cient pressure.
Blocked pipes and/or inlet points
closed.
Fan obstructed.
Filter overloaded.
Insuffi cient rotation speed.
Exchanger package blocked.
Clean inlet tubes.
Clean fan.
Clean or replace fi lter.
Check power supply voltage.
Clean the exchanger.
Reduction in
performance after a
period of acceptable
operation.
Leaks in the circuit before and/or
after the fan.
Damaged roller.
Check the circuit and restore original con-
ditions.Check the impeller and if necessary,
replace with an original spare part.
Contact the
S&P
post sales service.
New air temperature
too cold.
Outside air -5ºC or less.
Models (CADB/T DI): Thermal
protectors Support resistances
open.
Insertion of post-heating resistances.
Contact the
S&P
post sales service.
Reset by pushing the button RESET, all the
thermal protectors of the resistance.
Insuffi cient performance
of the exchanger.
Fins dirty.
Clean the exchanger.
Formation of frost on
the exchanger.
Outside air below -5ºC.
Insertion of pre-heating devices (anti-ice).
Contact the
S&P
Customer Advice service.
Air pulsation.
Fan working in excessively low
fl ow conditions.
Flow instability, obstruction or
bad connection.
Modifi cation of the circuit and/or replacement
of the fan. Clean and/or readjust the inlet
channels.
Operate the electronic regulator, increasing
the minimum speed (insuffi cient voltage).
Contact the
S&P
Customer Advice service.
There is water inside
the unit.
Drain clogged or wrongly
dimentioned.
Check if exists a body/object obstructing the
passage of water and remove it. Verify that the
drain trap exists and is correctly sized
according to the instructins of this manual.
Only DC versions. Internal
breakage of water coil.
Isolate the battery using the isolation valves.
Repair the leak/ Replace the battery.
Only DC version. The water coil
is being used for cooling purpose
with cold water.
The CADB-HE DC heat recovery can be used
just for post-heating function with hot water.
Summary of Contents for CADB HE ECOWATT Series
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