I have factory installed espar d2 bunk heater it worked fine for a year when summer came I didn't use it n never bother checking. The other day I noticed I have no power to my Digi max I checked all fuses even in the bunk heater one none where blown I checked with my multimeter the positive and negative power has no voltage is there something I'm missing somewhere I checked every fuse I can't think n found nothing need help please
Espar bunk heater
Discussion in 'Questions From New Drivers' started by Keepontrucking2016, Sep 21, 2019.
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Did you check the power connection at the battery?
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You need to take it to the Espar dealer and have them go through it.
And run it every month, it needs to be run at least once a month for 15 to 30 minutes to keep it running in the winter.Tx Countryboy and tscottme Thank this. -
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alds and FlaSwampRat Thank this.
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Found this with an online search. The system is designed to not turn on if the batteries are at a minimum voltage level.
http://www.sprinter-rv.com/wp-content/uploads/2010/09/2013_Espar_AirtronicD2-D4_Repair_Manual.pdf
Fault reader displaying - - - (dash dash dash) or non-functional Espar unit without fault codes
1 . Check units open circuit voltage at the batteries.
2 . If the voltage is below 12.6 (Flooded cell) or below 12.8 (AGM) charge the batteries to a minimum of 12.4 volts (must be above the system LVD setting)following your company’s standard practices and restart troubleshooting. a. Otherwise continue below.
3 . Connect Diagnostic Interface adapter (Figure 15).
4 . Using the “Y” adapter and multi-meter: a. Perform a continuity test to verify ground on the brown wire of 0 ohms. b. Perform a voltage test to verify battery power between the red wire and the brown wire.I. If voltage is below 10.5 volts troubleshoot the tractor’s wiring utilizing the manufacturer’s documentation – II. Check for harness voltage drop to the heater. c. Perform a test to verify continuity to the diagnostic reader at blue wire-white tracer at the white connector and blue wire-yellow tracer on the Espar heater.I. If wires are damaged repair wires.II. Always use heat shrink, solder or connectors with heat shrink tubing when making wiring repairs.
5 . If the problem persists connect the test harness (Figure 15) and wire the Espar directly to the batteries. a. Plug the 8 pin adapter test harness in series with the Espar harness at the heater.6 . Use a known good battery (12 volt min.) and supply external power using the white connector plug (heavy red wire=power, heavy brown wire=ground).7 . If the problem persists, replace the control unit (ECU). -
Keepontrucking2016 and FlaSwampRat Thank this.
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alds and FlaSwampRat Thank this.
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Is there a separate set of fuses? Another fuse box?
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