Weil-mclain ULTRA 230 Bedienungsanleitung PDF herunterladen (Seite 29)

Part number 550-100-029/0810

GAS-FIRED WATER BOILER SERIES 1 & 2 —

Control supplement & Service guide

Troubleshooting (continued)

Instructions in this supplement are based

on factory default parameter settings.

HARD LOCKOUT condition [Display ﬂashes ﬁrst digit, “E” and last two digits (code)]

02 Ignition failed through 5 attempts:

3PARKOCCURSBUTNOmAME:

4HISSECTIONCONTINUEDFROMPREVIOUSPAGE

Remove condensate drain and check drain ﬁtting on bottom of heat exchanger and

condensate trap for restriction.

If restricted, clean and let condensate water out. s

Re-connect and ﬁre boiler.s

Clean the heat exchanger — perform the boiler complete maintenance procedures

beginning on page 33 of this guide.

See Ultra Boiler manual or the instructions in this guide for procedure to disconnect

gas valve from venturi.

Inspect venturi gas line to verify there are no obstructions. s

Reinstall gas valve.s

Check for possible ﬂue gas recirculation at vent/air terminations or inside boiler hous-

ing. Look for signs of moisture, corrosion in the venturi or water dripping from the

burner.

If gas valve is powered, gas ﬂows when activated, and above have been veriﬁed, replace

the gas valve and retry.

02 Ignition failed through 5 attempts:

&LAMEOCCURSBUTmAMESIGNAL

STRENGTHISLOW

( less than 4 vdc

between low voltage terminal strip

terminal 9 and ground):

Inspect ﬂame per procedure in Ultra Boiler manual, at low ﬁre and high ﬁre rates.

Remove and inspect/clean ignition electrode per Ultra Boiler Manual. Clean white oxides

if necessary. Replace ignition electrode if in poor condition or cannot be cleaned.

Inspect and clean burner if necessary — perform the boiler complete maintenance

procedures beginning on page 33 of this guide.

Replace burner if not in good condition.s

Check gas ﬂow rate at gas meter with boiler at high ﬁre (see Ultra Boiler manual for

procedure to force boiler to high ﬁre).

If input is not within about 10% of boiler rating, replace gas valve.

Note that the length of the vent/air piping will affect boiler ﬁring rate, with longer s

piping causing lower inputs.

Check ground wire and connections from ground terminal strip to heat exchanger access

cover and from ground terminal strip to X1-6 terminal on the wiring harness.

Use ground continuity meter to verify good ground path.s

Follow procedure in Ultra Boiler manual to inspect and clean ignition electrode.

Replace ignition electrode if necessary.s

If above does not correct problem, replace control module.

03 Ignition failure or gas valve

electrical problem

If error occurs before boiler tries for ignition, problem may be gas valve connection or

harness. Measure continuity of gas valve harness through outer 2 pins of connector.

Measure resistance between outer two pins on gas valve — should be approximately 50

ohms. Resistance from each pin to ground must be inﬁnity.

If error occurs after 5 ignition retries, E-03 indicates same condition as E-02. Refer to

E-02 troubleshooting.

Replace control module.

&IGURE Troubleshooting procedures — when display shows hard lockout code (continued)

#ONTINUEDONNEXTPAGE

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