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You are correct about the "er" message. Best bet is to check your user manual for error codes and then take it from there. If nothing in book it is possible that the answer might be on manufacturer web site.
Could be issue with thermostat itself if the other zone is being cooled properly.
Are you trying to run your cooling now? I'm guessing you have a carrier thermostat and that's where this is displaying. It's been awhile since I've came across one but to my vague reculiction that code indicates the outdoor sensor detects low ambient them temperatures which in turn will not allow your air conditioner to run which would make sense this time of year. If you want to run cooling in below 60 degrees temps you must add a "low ambient kit" this shuts the fan down outside to build up higher head pressure without doing this you will just ruin your ac but in your case it won't let you. Google up your Tstats model number and codes if that's not your situation.
Did the remote come with the AC unit? If not it may have to be reprogrammed to "see" the AC or it may not work at all. If the remote came with the AC dig out that owners manual and read what it says about the remote. When all else fails, reading the instructions can't hurt.
Hi, David you need to perform the following tests:
1. Fill acid type batteries to proper levels.
2. Charge battery overnight at 1-2 amps you need 12.5 volts or better after charging and it must be able to pass a proper "LOAD" test you may have cursory readings of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries have this issue more so than lead-acid types.
3. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
4. Hook up battery positive cable, then with your multimeter on the milliamp scale connect one lead to the negative battery post and the other lead to the ground cable. The meter should read 3 milliamps or less, 10 milliamps with a radio, 15 milliamps with radio and CB. If your multimeter reads higher you need to isolate the circuit by pulling fuses and circuit breakers one at a time and observe multimeter for a drop in amperage then get out your test light and track down the short in that circuit.
5. Hook up the multimeter to the battery set it to DC volts and start the engine if multimeter falls below 9.0 volts while cranking you need to perform a proper load test on the battery and replace if necessary.
6. With the engine running at 3600 RPM, the battery should read 14.3-14.7 volts if not continue tests.
7. Unplug the voltage regulator from the alternator at crankcase by the front of the primary cover.
8. To test voltage regulator go to https://www.youtube.com/watch?v=F8EjV0IjW9Q
9. With the multimeter set to the ohms scale, with one lead grounded, touch an alternator pin ohmmeter should read infinity, if not replace the stator.
10. With both leads touching alternator pins, multimeter should read 0.1 to 0.2 ohms on 1989 and later models. 0.2 to 0.4 ohms 1988 and earlier models, if not replace the stator.
11. With the multimeter set on AC volts scale, both leads touching alternator pins multimeter should read 16 to 20 volts AC for every 1000 RPM'S 1989 and later and 19 to 26 volts AC for every 1000 RPM. If not replace the rotor.
12. Check for excessive wattage load from the headlight
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day. https://www.reddit.com/r/Fixxit/comments/2lkuoi/1999_kawasaki_er5_dead_battery_resistance_across Kawasaki ER 5 Electrical Short Biker ie Forums KAWASAKI ER 5 Service Manual OEM Parts for Kawasaki http://mybikemanuals.com/kawasaki
Ok..that is a strange one.. I am going to hazard a guess and suggest you look to the AC compressor.
When you run the defroster the ac compressor comes on..typically whenever the outside temp is above 40 degrees.. the ac compressor kicks in to dry out air inside.
Often when it rains.. the windows fog.. you turn on the defrost.. the ac compressor tries to come on.. and.. there ya go.. rather there your serpentine belt goes.
Several things could cause this.. worn belt.. failing belt tension-er... or failing ac compressor..
If the ac compressor is frozen meaing it will not turn..when the electric clutch on the front engages.. it would cause the pulley to stop turning.. and the belt would have a hard time staying on a non rotating part.
Or if the belt tension-er is bad..or the belt is worn.. when the additional load of the compressor kicks in.. it jumps off.