Trane Jupiter JDAC Series User Manual

50
HUMIDITY CONTROL
FANS
ELECTRIC HEATERS
PROBLEM POSSIBLE CAUSE CHECK/CORRECTIVE ACTION
ROOM HUMIDITY TOO
HIGH
A) The parameter settings on the control panel
are not correct.
See control panel instruction manual.
B) The latent load is higher then expected.
Check the latent load, fresh air conditions and
volume; external air inltration.
C) Control system not working.
See: Control system user instruction manual;
check the panel and/or the probe are working
properly.
D) The chilled water is not sufciently cold for the
dehumidication function (in energy saving and
twin cool units).
Lower the chilled water temperature until
condensate is present on the surface of the coil.
ROOM HUMIDITY TOO
LOW
A) The parameter settings on the control panel
are not correct.
Check the room humidity settings (see control
panel instruction manual).
B) The latent load is lower than expected.
Check the latent load, fresh air conditions and
volume; external air inltration.
C) The humidier doesn’t work.
1) Check the water supply pressure.
2) Check the function of the manual control
system and of the steam production group (see
panel instruction manual).
D) The control system does not work.
See the control panel instruction manual; check
that the control panel and/or sensors work
properly.
PROBLEM POSSIBLE CAUSE CHECK/CORRECTIVE ACTION
ABSENT OR LOW AIR
FLOW
A) There is no power to the fans. Check the power supply to the fans
B) The lter is blocked (possible intervention of
the dirty lters alarm).
1) Shake the dust out of the cartridge and clean
with a vacuum cleaner. Replace the lter if it is
completely blocked.
2) Check the correct setting of the dirty lter
pressure switch PFS.
C) Fans rotating in the wrong direction.
Reverse input phases and check if fans are
rotating in the correct direction
D) The air ow is obstructed. Check paragraph “AIR DISTRIBUTION”
E) The fans’ thermal protection intervenes.
Check the resistance of the fan motor windings.
Re-set then measure the voltage and absorption.
F) Fan speed regulator not set correctly.
See paragraph FAN SPEED ADJUSTMENT AND
SPEED REGULATOR SETTING.
G) Excessive head loss in the air distribution
sistem.
1) Check the dimensioning of the air distribution
system, as well as all its parts (ducts, suspended
ceilings, oor plenum, air grilles)
2) (For TDCR and TUCR models - having fans
with backward curved blades) change the power
supply voltage of the fans, in order to increase
the fan rotation speed.
PROBLEM POSSIBLE CAUSE CHECK/CORRECTIVE ACTION
INTERVENTION OF
ONE OR BOTH OF THE
ELECTRICAL HEATERS’
SAFETY THERMOSTATS
A) There is insufcient air ow. See “LACK OF / ABSENT AIR FLOW”.
B) The thermostat connection wire is interrupted
Check the continuity of the connection of the
safety thermostats to the control system.
C) One or both of the thermostats are broken
Replace one or both of the electrical heaters’
safety thermostats

Trane Jupiter JDAC Series Specifications

General

Brand	Trane
Model	Jupiter JDAC Series
Category	Chiller
Language	English