Differences

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--- ess:design-installation-manual [2019-01-24 07:23] – [9. FAQ] guystewart
+++ ess:design-installation-manual [2019-05-16 11:09] – [4.3 Venus-device - ESS Settings] iburger
@@ Line 333: / Line 333: @@
   * Lithium with active cell balancing
   * [[battery_compatibility:redflow_zcell|Redflow ZCell]]
-  * [[battery_compatibility:aquion_ahi|]]
 However, BatteryLife //can// be disabled in these cases.
@@ Line 350: / Line 349: @@
 Set to 'On' to make the Solar Charger always operates at its maximum power point. The first priority is powering the loads, and the second priority is to charge the battery. If more power is available when those two priorities are met, then that power will be fed to the utility grid.
+Please note that when enabling this option, the DVCC charge current limit configured under Settings -> Limit charge current won't be active. The Solar charger will operate at full power for maximum feed-in into the grid. It's advisable to configure a safe limit on the solar chargers when used with a small battery bank.
 === 4.3.5 Phase compensation ===
@@ Line 411: / Line 412: @@
 This sets the point at which power is taken from the grid when the installation is in self-consumption mode. Setting this value slightly above 0W prevents the system from feeding back power to the grid when there is a bit of over-shoot in the regulation. The default value is therefore 50W - but should be set to a higher value on large systems.
 ==== 4.4 Venus-device - Scheduled Charging ====
@@ Line 605: / Line 607: @@
 (This 0.1 V is the threshold for 12 V systems; for 24 V the threshold is 0.2 V above; and for 48 V it is 0.4V above.)
+==== 6.5 ESS Battery Status Code Numbers ====
+In addition to the charger states (Bulk/Absorption/Float), there are additional Discharging and Sustain codes that provide at-a-glance information on the Pages Overview of GX display.
+{{:ess:victron_-_ess_codes.jpg?direct}}
+The key for these codes is:
+  * #1: SOC is low
+  * #2: BatteryLife is active
+  * #3: BMS disabled charging
+  * #4: BMS disabled discharge
+  * #5: Slow Charge in progress (part of BatteryLife, see above)
+  * #6: User configured a charge limit of zero.
+  * #7: User configured a discharge limit of zero.
 ===== 7. Phase compensation - further information =====
@@ Line 878: / Line 898: @@
 The same applies to other solutions where the wiring is not protected against accidental removing, for example a simple cable with end-user removable plug, such as a portable power supply.
+===== Troubleshooting =====
+- Start with checking firmware versions (needs to be latest). And when asking questions; report the exact firmware versions that are used.
+- Check battery type/brand. If lead then it might be unsuitable and probably broken because of the heavy cycling.
+- If some unknown or unsupported CANbus battery; change the battery to a supported type.
+Then; if PV is not used enough to power loads;
+- Check for the # reason codes; see CODE KEY in this manual.
+- Check wiring: lots of voltage drop between MPPT and multi will prevent the system from effectively powering AC loads from solar power.
+- Test with and without SVS enabled.
+- Next, check MPPT charge current limit during the time that it is not used enough. MPPT CCL is supposed to be high always; even when battery full. Unless there is a temperature issue.
+- Now check MPPT Charge Voltage Setpoint. It is supposed to be above actual battery voltage.
+Note that those last two setpoints are determined by software; and calculated based on the setpoints sent by the (CANbus connected) lithium battery: you can't change change them manually. Looking at them however does help understanding why certains things are happening;
 ===== DISQUS =====
 ~~DISQUS~~