S&P SLIM Series, Manual, Page: 69 / 72

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Soak the heat exchanger in a mixture of water and soft detergent, rinse with clear water and allow all water to drain.
After drying, installation is carried out in the reverse sequence.
33.4. CONDENSATION DRAINPIPE
Inspect the drainpipe regularly and make sure it is not blocked, if this is the case, remove the obstruction.
34. OPERATION ANOMALIES
34.1. GENERAL ANOMALIES
Anomaly Cause Solution
The unit no longer works, control
panel does not work. The supply voltage is interrupted. Set up the main voltage again.
A fuse has burned out in the ventilation
system. Check the fuse and replace it.
Difficulty for starting up Reduced power supply voltage. Check the supply voltage. Change the motors if necessary.
Contact S&P after sales service.
Insufficient performance Blocked inlet/outlet points. Inspect and clean inlet/outlet ductwork.
Fan obstructed. Clean fan.
Filter overloaded. Replace filter.
Insufficient rotation speed. Check power supply voltage.
Exchanger blocked. Clean the exchanger
Reduction in performance after a
period of acceptable operation. Leaks in the circuit before and/or after
the fan. Check the circuit and restore original
Fan damaged. Check the fan and replace with an original part if
necessary. Contact S&P after sales service.
Supply air temperature too cold Outside air -5ºC or less. Insertion of a post-heater or preheater
Supply air fan and extract air fan are not
properly balanced. Check the fans balancing (ratio between supply and extract
air fan).
The air cools down in the ducts. Check insulation of extract and supply air lines.
Unstable airflow Obstruction or bad duct connection. Inspect and clean the ductwork.
Modify “PI parameters”, see section "19.1.
Commissioning". Contact with S&P after sales service.
The electrical postheater does not
start up. Electric heater thermal protectors
activated Push the manual reset of the electrical heater. See section
"14.4.5. Wiring of electrical coil delivered as an external
module (SL-DI)".