X30 Owner’s Handbook Page 17
The PCM (PROHEAT Control Module) has self diagnostics for reliable operation, safety and protection
of the PROHEAT. If a problem is detected it shuts the PROHEAT OFF and will start blinking the
diagnostic indicator light on the PCM cover, toggle switch, timer red manual light or OEM indicator
light (installation options). A diagnostic code number is also displayed on the PCM Diagnostic Panel
located under the PCM cover and the optional PFC.
PROHEAT will attempt one (1) re-start after a Function or Component Diagnostic Code has been
indicated. The re-start will not occur during a Cool Down (Purge) cycle or if the coolant temperature
is above 150°F (65°C). ALWAYS let the PROHEAT attempt two (2) starts so that the PCM can point
you to the problem area.
1. Switch the PROHEAT ON using the toggle switch, T-II Timer or PFC.
2. Check the diagnostic code indicator located under the PCM cover on the heater. The codes are as
a two digit code followed by a dash single digit code such as 01-1.
3. Function Diagnostic codes 01 to 05 are usually caused by vehicle system interface problems.
4. Components Diagnostic codes 13, 14, 19 and 21 to 29 indicate an electrical problem ONLY, with
PROHEAT components, wiring or the PCM. Refer to your Installation and Service manual SL9211
for further information.
5. For an up to date Installation and Service manual SL9211 or to locate a Distributor/Dealer near
you, go to www.proheat.com
Troubleshooting
Notice
trouBleShootiNg StepS
For more detailed troubleshooting information,
refer to the Installation and Service manual
SL9211 at www.proheat.com
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