Generac Power Systems PWRcell Reference Manual page 81

V-Type Transfer Switch with PWRcell ATS Controller with AC Generator ONLY (NO Inverter) – No
Transfer to Utility
DANGER
Electrocution. High voltage is present at
transfer switch and terminals. Contact with live
terminals will result in death or serious injury.
1. Check for AC utility voltage at A and N2A on the
C1 coil.
•
If utility voltage is present at Wire A and Wire N2A
the problem is internal to the C1 coil. Test coil for
resistance.
NOTE: The C1 coil has an internal AC to DC rectifier
Resistance is typically over 5 Meg ohms. An O/L reading
indicates an open rectifier and requires coil replacement.
Diagnostic Repair Manual
NOTE: Inspect coil for mechanical or thermal damage,
replace as necessary.
•
If utility voltage is NOT present at A and N2A trou-
bleshoot the wiring harness relay contacts.
2. Measure the resistance of wire N2A between pin 6
(000129)
and lug N2 (disconnect and isolate the wire).
•
Replace wire if open.
•
If continuity is measured reconnect the wire and
proceed to next step.
3. Measure the resistance of wire N2A between pin 5
and C1 coil (disconnect and isolate the wire).
•
Replace wire if open.
•
If continuity is measured reconnect the wire and
proceed to next step.
Figure 8-44.
Section 8 PWRcell ATS
013409
77