Electrical Controls And Wiring - Carrier Deluxe 58MVB Service And Maintenance Instructions

a. Using an ohm meter, check resistance across both
igniter leads in connector.
b. Cold reading should be between 40 ohms and 70
ohms.
5. Remove igniter assembly.
a. Remove burner box cover.
b. Remove igniter wires from slot in manifold grommet.
(See Fig. 7.)
c. Using a 1/4- -in. driver, remove the single screw
securing the igniter bracket to the burner box bracket
(See Fig. 13.) and carefully withdraw the igniter and
bracket assembly through the front of the burner box
without striking the igniter on surrounding parts. Note
that the igniter bracket has a handle that extends to the
front of the burner box to aid in handling. (See Fig.
13.)
d. Inspect igniter for signs of damage or failure.
BURNER FLAME
MANIFOLD
Fig. 11 --- Burner Flame
PAM
RTV
Fig. 12 --- Gasket on Collector Box
BURNER
A89020
A93081
9
EXTENDED IGNITER
BRACKET HANDLE
IGNITER BRACKET
MOUNTING SCREW
Fig. 13 --- Igniter Bracket
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in premature
failure of the igniter.
The igniter is fragile. DO NOT allow it to hit burner box
parts while removing or replacing it.
e. If replacement is required, replace igniter on igniter
bracket and then install assembly into burner box to
avoid damage to the igniter.
6. To replace igniter and bracket assembly, reverse items 5a
through 5d.
7. Reconnect igniter wire connection and insert the igniter
wires in the slot in the manifold grommet, dressing the ig-
niter wires to ensure there is no tension on the igniter it-
self. (See Fig.7.)
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Igniter wires must be securely placed in slot in manifold
grommet or else they could become pinched or severed
and electrically shorted.
8. Reinstall burner box cover.
9. Turn on gas and electrical supplies to furnace.
10. Verify igniter operation by initiating control board self- -
test feature or by cycling thermostat.
11. Replace main furnace door.
Step 7—Electrical Controls and Wiring
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
There may be more than one electrical supply to the
unit. Check accessories and cooling unit for additional
electrical supplies.
IGNITER
BRACKET
9/16˝
11/16˝
A05075