Specifications

MS TECHNICAL MANUAL
LAST UPDATE 12-10-04
1060003 12/04
TESTING SS RELAY
See SS Relay under “Component Description & Function” before proceeding.
TESTING SS RELAY
To determine if relay contacts are stuck closed
(Unit overheating):
Disconnect RED wire from relay terminal 3 (+).
Clamp an amp meter onto the black wire at relay
terminal 1 or 2.
Is there any amp draw? If yes, replace relay.
To determine if relay contacts are stuck open
(Unit not heating):
Ensure the control board & relay are wired per
the wiring diagram.
Is 10-15 VDC present at relay terminals 3 (+)
& 4 (-)? If yes, is line voltage present across the
two generator terminals?
If no, replace relay.
1
2
3+
4-
Replacement Procedures
Disconnect the relay wiring (Mark for reinstallation).
Remove the two mounting screws & relay.
Install new relay with thermal compound (If included in kit).
Reinstall wiring onto relay.
Test unit for proper operation.