Specialty Concepts MARK/22 User Manual
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MARK/(15,20,22) PROBLEMS:
-
Refer to this chart and the MARK/(15,20,22) PROBLEM CASES to help
diagnose problems based on the MARK/(15,20,22) readings.
CASE
BATTERY VOLTAGE
READING
ARRAY CURRENT
READING
YELLOW
CHARGING
LIGHT
GREEN
CHARGED
LIGHT
OTHER
MARK/(15,20,22
) NOTE
(Below)
1
→
Display blank
Display blank
Day
See Note 1
2
→
Display blank
Display blank
Night only
See Note 2
3
→
10-13
00.0
OFF
Day
See Note 3
4
→
12.0-14.7 00.0 ON
ON
Day
See Note 4
5
→
13-14.7
00.0
ON
Day
See Note 5
6
→
14.7 - 22.0
ON
See Note 6
7
→
ON at night
Night
See Note 7
8
→
Reading changing rapidly
Reading changing rapidly
May be flashing
May be flashing
Day
See Note 8
9
→
Bad Display Readings
Bad Display Readings
See Note 9
10
→
Voltage reading higher than
actual battery voltage
See Note 10
11
→
Current less than expected
Day
See Note 11
12
→
Changes to ON or
OFF
Changes to ON or
OFF
Day – When fuse is removed
See Note 12
13
→
Day -MARK/(15,20,22)
See Note 13
14
→
MARK/(15,20,22) hot
See Note 14
15
→
Bar-Graph off
See Note 15
16
→
Fuse keeps blowing
See Note 16
MARK/(15,20,22) PROBLEM NOTES (from MARK/(15,20,22) PROBLEMS chart)
MARK/(15,20,22) Note 1 - A display blank both day and night may indicate…
• A bad connection exists to the solar panel (See BAD CONNECTION: PANEL (Help Note #8)) and the battery has either a bad connection (See BAD
CONNECTION: BATTERY (Help Note #9)) or the battery is low in voltage (the meter requires 10 volts to operate).
• The MARK/(15,20,22) is defective. See CONTROLLER DEFECTIVE (Help Note #13).
MARK/(15,20,22) Note 2: - A display that is only blank at night may indicate…
• A bad connection exists to the battery. See BAD CONNECTION: BATTERY (Help Note #9).
• A blocking diode or diode isolator exists in the battery connection. If there is a blocking diode, remove it. If there is a diode isolator, modify the system so
the MARK/(15,20,22) charges only one battery bank.
MARK/(15,20,22) Note 3 - A low voltage condition with no daytime charging may indicate…
• The system has no panel input. See BAD CONNECTION: PANEL (Help Note #8)
• The charge set-point has been set very low. See INCORRECT VOLTAGE SET-POINT (Help Note #11)
• The MARK/(15,20,22) is defective. See CONTROLLER DEFECTIVE (Help Note #13).
TEST: Perform the BATTERY FUSE REMOVAL TEST (Page 8)
MARK/(15,20,22) Note 4 - The “CHARGING” and “CHARGED” lights on, is caused by a bad battery connection. See BAD CONNECTION: BATTERY (Help
Note #9).
MARK/(15,20,22) Note 5 - The “CHARGING” light on with 00.0 amps from the array may indicate…
• A condition exists of very low levels of light to the panels
• A system problem. This would be a panel, connection or wiring problem. Often, this happens when the negative connections from the array and battery
are connected. Refer to INSTALLATION INSTRUCTIONS, step #12: MARK/(15,20,22) CONNECTION (Page 3)
• The MARK/(15,20,22) is defective. See CONTROLLER DEFECTIVE (Help Note #13).
TEST: Perform the BATTERY FUSE REMOVAL TEST (Page 8)
MARK/(15,20,22) Note 6 - High voltage with the “CHARGING” light on may indicate…
• A bad connection exists to the battery. See BAD CONNECTION: BATTERY (Help Note #9).
• The charge set-point is set very high. See INCORRECT VOLTAGE SET-POINT (Help Note #11)
• The MARK/(15,20,22) is defective. See CONTROLLER DEFECTIVE (Help Note #13).
TEST: Perform the BATTERY FUSE REMOVAL TEST. (Page 8)
MARK/(15,20,22) Note 7 - The "CHARGING" light can be on (bright to dim) at night if the panels are under even very low levels of light (moonlight or street lights).
The "CHARGING" light on brightly at night may also indicate…
• The unit is mis-wired. Refer to INSTALLATION INSTRUCTIONS, step #12: MARK/(15,20,22) CONNECTION (Page 3).
• There is a blocking diode located within the solar panels or in the panel connection. This is not a serious problem, but should be removed if possible.
• The MARK/(15,20,22) is defective. See CONTROLLER DEFECTIVE (Help Note #13).
TEST: Disconnect the panel (ARRAY (+)), if the light goes off, then it may be possible that the panel is receiving enough light for a slight charge, or a diode exists
in the connection.
MARK/(15,20,22) Note 8 – The display readings and status lights changing rapidly may indicate…
• A normal condition. If the battery is fully charged and the array has a lot of additional charge current, the controller can pulse on and off rapidly, especially
when current is being used by a load. This is OK.
• A bad connection exists to the battery. See BAD CONNECTION: BATTERY (Help Note #9).
• A problem exists with the battery. The battery bank is bad or too small. See PROBLEMS WITH BATTERIES (Help Note #7)
TEST: Take an accurate voltage reading at the battery. If this voltage reading stays steady while the reading on the MARK/(15,20,22) goes up and down,
then suspect a bad battery connection. If the voltage here also moves up and down rapidly, this would indicate either a normal condition or a battery
problem.
MARK/(15,20,22) Note 9 - Bad display readings may indicate…(display issues don’t affect the charging functions)
• System noise. Digits are OK, but the readouts are erratic. See SYSTEM NOISE (Help Note #12)
• A Defective unit. Digits are OK, erratic readouts and a correlation to high humidity exists.
• A Defective unit. If the quality of the digits are bad with missing segments or black background areas.
MARK/(15,20,22) Note 10 - A voltage reading that is a lot higher than the actual battery voltage is caused by a bad battery connection. Somewhere it could be
corroded or loose. If you rechecked at night or disconnect the panel, the difference should go away. See BAD CONNECTION: BATTERY (Help Note #9).
MARK/(15,20,22) Note 11 - If the charge current seems too low for your panels, refer to SOLAR PANEL PROBLEMS section (Page 8). Also, check to see that
there is not an alternative path from the solar panel negative to the battery negative other than through the MARK/(15,20,22).
MARK/(15,20,22) Note 12 - The charge control circuit will reset when power is removed. Removing and replacing the battery fuse will momentarily lose power to the
control circuit, causing it to reset. It will usually reset “CHARGING”. This is normal and does not indicate a problem.
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