T R O U B L E S H O O T I N G T R E E S
MN-36008 (Rev. 8) 01/16 • COMBITHERM CT EXPRESS • D-25
N o C o n d e n s a t e I n j e c t i o n ( E 1 5 e r r o r c o d e )
Is B3 probe above 190ºF (88ºC)?
Is voltage across the coil
of the Y2 solenoid?
Is Y2 solenoid opening?
B3 must be above 190ºF (88ºC)
No
Yes
Yes
No
L1/A1 supplied from RBH
X2/210, L2/A2 supplied
from TB 12
No
Yes
Ensure water pressure
does not exceed 90 psi.
Replace Y2 solenoid
Repair obstruction between Y2
solenoid and the condensate
injection nozzle
Is water flowing to
condensate injection
nozzle?
No
Is water flowing into the
condensate pan?
Repair obstruction in
condensate injection nozzle
Inspect B3 probe, repair/
clean/replace as required
Is clean out port on
condensate pan closed?
Close clean out port and retest
No
Yes
Yes
No
Yes
Summary of Contents for CT EXPRESS 4 10ESi
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