Escea DS1150 - Page 58

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58
630791 DS MKII INSTALLATION MANUAL
E2.7
Crically low supply voltage.
(<185V)
Check supply voltage.
E3.1
TCO 1 (Heat exchanger) has
gone over temperature.
Check that fans are plugged in, cleaned, and free turning - room air fans may be
slowed or stalled.
Check the burner pressure -being set too high may result in excess heat build-
up.
Check the gas jets are correct.
E3.2
TCO 2 (Lower chassis) has
gone over temperature.
Check that fans are plugged in, cleaned, and free turning.
Check fan capacitors are plugged in - secondary room air fan may be slowed or
stalled.
E3.3
TCO over current protecon
acvated.
Check that TCO wiring terminals are properly connected and not touching the
chassis or rebox.
E4.1
Primary valve solenoid
current abnormal.
Check that the connecons to each solenoid are secure and in place.
The primary solenoid on the valve inside the re may have failed. If this is the
case, the coil will need to be replaced.
E4.2
Secondary valve solenoid
drawing current when
supposed to be o.
Contact Escea technical support.
E4.3
Secondary valve solenoid
overcurrent protecon
acvated.
The valve solenoids have failed the pre-ignion test. A wire may have dislodged
or the valve solenoid is faulty.
Check that the connecons to each solenoid are secure and in place.
The connecons on the ends of the wires may need to be ghtened (e.g. with a
pair of pliers) to ensure a robust connecon to the valve terminal.
Check the wiring to the soleniods for damage.
E4.4
Secondary valve solenoid
drawing too much current.
E4.5
Secondary valve solenoid
drawing too lile current.