Dometic 30AMP PWM User manual

BLUETOOTH® SOLAR
CONTROLLER
User Manual
GP-PWM-30-UL (BLUETOOTH®-ENABLED - LITHIUM COMPATIBLE)
© 2021 Go Power!
Worldwide Technical Support and Product Information gpelectric.com
Go Power! | Dometic
201-710 Redbrick Street Victoria, BC, V8T 5J3
Tel: [phone]
Manual_GP-PWM-30-UL
30AMP PWM

[page 2] | gpelectric.com
1. INSTALLATION OVERVIEW..................................................................................................................... 4
1.1 INTRODUCTION ..............................................................................................................................4
1.2 SYSTEM VOLTAGE AND CURRENT....................................................................................................4
1.3 BATTERY TYPE.................................................................................................................................4
1.4 LOW VOLTAGE DISCONNECT FUNCTION (USB PORT) .......................................................................4
1.5 BLUETOOTH®WIRELESS TECHNOLOGY ............................................................................................4
1.6 REGULATORY INFORMATION ..........................................................................................................4
1.7 SPECIFICATIONS..............................................................................................................................5
2. WARNINGS ............................................................................................................................................... 5
3. TOOLS AND MATERIALS NEEDED........................................................................................................ 6
4. CHOOSING A LOCATION ........................................................................................................................ 7
5. CHOOSING A BATTERY........................................................................................................................... 7
6. INSTALLATION INSTRUCTIONS............................................................................................................. 7
7. WIRING DIAGRAM .................................................................................................................................. 8
7.1 CHARGING ONLY ONE BATTERY ......................................................................................................9
7.2 CHARGING TWO BATTERIES............................................................................................................9
8. OPERATING INSTRUCTIONS ................................................................................................................10
8.1 POWER UP....................................................................................................................................10
8.2 SETTING THE BATTERY CHARGING PROFILE ..................................................................................10
8.3 BATTERY CHARGING PROFILE CHART ............................................................................................11
8.4 MAXIMUM POWER BOOST TECHNOLOGYTM ..................................................................................12
8.5 VIEWING THE CONTROLLER DISPLAY INFORMATION.....................................................................13
8.6 RESETTING THE AMPERE HOURS CHARGED ..................................................................................15
8.7 ERRORS ........................................................................................................................................16
9. DISPLAY SYMBOLS.................................................................................................................................17
CONTENTS

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10. INVERTER CONTROL (ON/OFF)............................................................................................................19
11. USB CHARGING......................................................................................................................................21
12. BLUETOOTH®WIRELESS TECHNOLOGY.............................................................................................21
12.1 PAIRING........................................................................................................................................21
12.2 APP SETTINGS...............................................................................................................................22
12.3 GENERAL INFO .............................................................................................................................22
13. FREQUENTLY ASKED QUESTIONS (FAQS) .........................................................................................22
14. TROUBLESHOOTING PROBLEMS.........................................................................................................23
11.1 PROBLEMS WITH THE DISPLAY......................................................................................................24
11.2 PROBLEMS WITH VOLTAGE ...........................................................................................................24
11.3 PROBLEMS WITH CURRENT...........................................................................................................24
15. LIMITED WARRANTY ............................................................................................................................25
15.1 REPAIR AND RETURN INFORMATION.............................................................................................25
16. INSTALLATION TEMPLATE ...................................................................................................................26
CONTENTS

[page 4] | gpelectric.com
1.1 INTRODUCTION
A Solar Controller (or Charge Controller / Regulator) is an essential component of your photovoltaic solar system. The Controller main-
tains the life of the battery by protecting it from overcharging. When your battery has reached a 100% state of charge, the Controller
prevents overcharging by limiting the current owing into the batteries from your solar array.
The GP-PWM-30-UL uses Pulse Width Modulation (PWM) technology and a unique four stage charging system that includes an optional
equalize setting to charge and protect your battery bank. The GP-PWM-30-UL features an LCD digital display that shows the charge
current of the solar array, system battery voltage and battery state of charge. The GP-PWM-30-UL also features Maximum Power Boost
Technology™ for manual bulk and absorption charge at any stage of the charge cycle.
1.2 SYSTEM VOLTAGE AND CURRENT
GP-PWM-30-UL is intended for use at 12 VDC system voltage and is rated for a maximum continuous DC input current of 37.5A and
input voltage of 35VDC.
Per National Electrical Code (NEC) article 690.7 and 690.8, PV module nameplate ratings must be multiplied by required values (typically
1.25 for both voltage and current) to obtain the maximum voltage and continuous current available from the module.
Applying NEC factors, the maximum allowable nameplate PV Panel rated Isc is 30A (30A x 1.25 = 37.5A), and the maximum voltage,
Voc is 28VDC (28VDC x 1.25 = 35VDC).
The voltage and current ratings of all equipment connected to PV panels must be capable of accepting the voltage and current levels
available from PV panels installed in the eld.
1.3 BATTERY TYPE
The GP-PWM-30-UL is suitable for use with lead acid batteries (vented, GEL, or AGM type) as well as some lithium iron phosphate
(LiFePO4) batteries that are supplied with a Battery Management System (BMS.
1.4 LOW VOLTAGE DISCONNECT FUNCTION (USB PORT, INVERTER REMOTE SIGNAL)
To protect the battery against over-discharge this function automatically switches off the USB output port when Battery 1 voltage is
lower than 11.0 VDC. If a compatible inverter is connected and set to remote mode, the controller will also switch off the inverter. This
will occur with a delay of 2 to 3 minutes.
As soon as Battery 1 reaches a voltage of 12.2 VDC (for LFP) or 12.8 VDC (for SEALED, AGM, or FLOODED) the USB output port is
switched on again. If a compatible inverter is connected and in remote mode, it will also be switched on again.
1.5 BLUETOOTH®WIRELESS TECHNOLOGY
The latest versions of GP-PWM-30-UL have integrated Bluetooth® Low Energy wireless technology ready to be paired to your mobile
device using the Go Power! Connect app available for download from the App Store and Play Store
1.6 REGULATORY INFORMATION
1. INSTALLATION OVERVIEW
PHOTOVOLTAIC CHARGE
CONTROLLER FOR USE IN
LAND VEHICLES
NO. E500409

gpelectric.com | [page 5]
INSTALLATION OVERVIEW
1.7 SPECIFICATIONS
DESCRIPTION VALUE
Nominal System Voltage 12 VDC Dimensions (H x W x D):
108 x 190 x 35 mm
4.25 x 7.48 x 1.38 in
Weight: 300g / 10.6 oz
Maximum Wire Gauge:
#4 AWG
Warranty: 5 years
• PWM Charging
• 3 Battery Charging proles
• 4 Stage Charging
• Monthly Equalize option
• Displays Charging Current,
Battery Voltage and Battery
State of Charge
• Reverse Polarity protected
• Temperature Compensated
• RoHS Compliant, environ-
mentally safe
• Accepts up to 600 watts of
solar at 12 volts
• Maximum Power Boost Tech-
nology
Charging Output Voltage Range Battery 1 9 – 14.9 VDC
Charging Output Voltage Range Battery 2 9 – 14.9 VDC
Maximum Charge Current Battery 1 37.5 A
Maximum Charge Current Battery 2 37.5 A
Maximum Solar DC Input Voltage 35 VDC
Maximum Series Fuse or Circuit Breaker Solar/Battery 15 A
Range of DC Input Voltage 9.0 – 35.0 VDC
Maximum DC Input Operating Current 37.5 A
Maximum DC Short Circuit Current 37.5 A
Max. Series Fuse or Circuit Breaker
Solar/Battery 1/Battery 2 50 A
Operating Consumption (Display backlight on) 15mA
Operating Consumption (Display backlight off) 6 mA
Battery Types Supported
Vented and Sealed (GEL, AGM etc.)
Lead Acid
Lithium Iron Phosphate (LFP or LiFePO4)
Bulk/Absorption Voltage
(Sealed/Gel, AGM/LFP, Flooded)
14.1/14.4/14.4VDC
(25°C / 77°F), 30min / Day or
2hr if battery voltage < 12.3 VDC
Absorption Voltage (LiFePO4) 14.4V - 30min / Day
Float Voltage (Sealed/Gel, AGM, Flooded) 13.7V (25°C / 77°F), 14.0V(Lithium)
Equalization Voltage
(Sealed only)
14.9V (25°C / 77°F),
2h / 28 Day or
if battery voltage < 12.1 VDC
Temperature Compensation (Sealed/Gel, AGM, Flooded) - 24mV/ºC / -13V/ºF
USB charger 5V, 1500mA
Low Voltage Disconnect (USB)
11.0 VDC
Reconnects once battery reaches:
12.8V for Sealed/Gel, AGM, Flooded
12.2V for LiFePO4
Operating Temperature - 40 to 85°C / - 40 to 185°F
Display Operating Temperature - 10 to 55°C / 14 to 131°F
Charge Current De-Rating
(Based on internal temperature of the controller)
Internal Temp. Max Charge Output Current
<80°C/176°F 37.5A
80°C/176°F 22.5A
81°C/177.8°F 15A
82°C/179.6°F 7.5A
>82°C/179.6°F 0A

[page 6] | gpelectric.com
2. WARNINGS
2. WARNINGS
Disconnect all power sources Electricity can be very dangerous. Installation should be performed only
by a licensed electrician or qualied personnel.
Battery and wiring safety
Observe all safety precautions of the battery manufacturer when handling
or working around batteries. When charging, batteries produce hydrogen
gas, which is highly explosive.
Wiring connections
Ensure all connections are tight and secure. Loose connections may generate
sparks and heat. Be sure to check connections one week after installation to
ensure they are still tight.
Work safely
Wear protective eye wear and appropriate clothing during installation.
Use extreme caution when working with electricity and when handling
and working around batteries. Use properly insulated tools only.
Observe correct polarity
at all times
Reverse polarity of the Battery 1 terminals will cause the controller to give
a warning tone. Reverse connection of Battery 2 terminals will not cause
an alarm. However, the controller will not charge or display information
for Battery 2 on the LCD. The controller will not function unless Battery
1 terminals are connected to a battery with proper polarity. Failure to
correct this fault could damage the controller.
Do not exceed the GP-PWM-
30-UL max current ratings
Do not exceed the GP-PWM-
30-UL max voltage ratings
The maximum current of the solar system is the sum of parallel-connected
PV module–rated short circuit Currents (Isc) multiplied by 1.25. The result -
ing system current is not to exceed 37.5A. If your solar system exceeds
this value, contact your dealer for a suitable controller alternative.
The maximum voltage of the array is the sum of the PV module–rated open-circuit
voltage of the series connected modules multiplied by 1.25 (or by a value from
NEC 690.7 provided in Table 690.7 A). The resulting voltage is not to exceed
35V. If your solar system exceeds this value, contact your dealer for a suitable
controller alternative.
Humidity 99% N.C
Protection
Battery Reverse Polarity, Solar Array Re-
verse Polarity, Over Temperature, PV Short
Circuit, Over Current
Communication Bluetooth®
(Use with Go Power! Connect app)

gpelectric.com | [page 7]
• Flathead Screwdriver (for wire terminals)
• Philips Screwdriver (for mounting screws)
• Wire Cutter /Stripper
If the GP-PWM-30-UL Controller was purchased with a Go Power! RV Solar Power Kit, then UV resistant wire is included.
For instructions regarding the Go Power! RV Solar Power Kit installation, please refer to the Installation Guide provided
with the Kit.
4. CHOOSING A LOCATION
The GP-PWM-30-UL is designed to be mounted ush against a wall, out of the way but easily visible.
The GP-PWM-30-UL should be:
• Mounted as close to battery bank 1 as possible
• Mounted on a vertical surface to optimize cooling of the unit
• Indoors, protected from the weather
In an RV, the most common controller location is above the refrigerator. The wire from the solar array most commonly enters the RV
through the fridge vent on the roof or by using the Go Power! Cable Entry Plate (sold separately) that allows installers to run wires
through any part of the roof. PV connections should connect directly to the controller. Positive and negative battery connections must
connect directly from the controller to the batteries. Use of a positive or negative distribution bus is allowed between the controller
and battery as long as it is properly sized, electrically safe and an adequate wire size is maintained.
5. CHOOSING A BATTERY
The GP-PWM-30-UL is suitable for use with lead acid batteries (vented, GEL, or AGM type) as well as some lithium iron phosphate
(LiFePO4) batteries that are supplied with a Battery Management System (BMS). If using lithium ion, it must be lithium iron phosphate
(LiFePO4) chemistry with a BMS. No other chemistries are compatible.
Lithium batteries typically have maximum allowed charge currents. These maximums typically decrease in cold temperatures. GP-PWM-
30-UL does not limit current for these restrictions, and system design of the solar array must account for this.
Be sure to follow all battery manufacturer safety instructions.
6. INSTALLATION INSTRUCTIONS
1. Prepare for mounting. Use the template provided on page 17 to mark the four mounting holes and the cutting line for ush
mounting your controller.
2. Complete the installation of the solar modules. If this GP-PWM-30-UL was purchased as part of a Go Power! Solar Power
Kit follow the Installation Guide provided. Otherwise, follow manufacturer’s instructions for solar module mounting and wiring.
3. Select wire type and gauge. If this GP-PWM-30-UL was purchased as part of a Go Power! Solar Power Kit, appropriate wire
type, gauge and length is provided. Please continue to Section 8, “Operating Instructions.” If the GP-PWM-30-UL was purchased
separately, follow the instructions included here.
Wire Strip Gauge
You will nd a strip gauge diagram on the back of the GP-PWM-30-UL, which helps you to strip your wires to the correct length. Insert
wire into the concave slot of the strip gauge until it meets the back of the Strip Gauge slot. Mark the length of wire from the back of the
Strip Gauge slot to the edge of the controller with a pen or your nger and strip all wires to be connected to the controller to this length.
3. TOOL AND MATERIALS NEEDED
Note

[page 8] | gpelectric.com
7. WIRING DIAGRAMS
Suggested Minimum Wire Gauge
(Cable length 25 ft. max. from solar array to battery bank).
Wire Type Wire size min (AWG) Wire size Max (AWG)
Copper Only, 90°C AWG 10 AWG 4
IMPORTANT: Identify the polarity (positive and negative) on the cable used for the battery and solar module. Use colored wires or
mark the wire ends with tags. Although the GP-PWM-30-UL is protected, a reverse polarity contact may damage the unit.
Wiring the GP-PWM-30-UL. Wire the GP-PWM-30-UL according to the wiring schematic in Section 7. Run wires from the solar array and
the batteries to the location of the GP-PWM-30-UL. Keep the solar array covered with an opaque material until all wiring is completed.
IMPORTANT: All wiring must be in accordance to National Electrical Code, ANSI/NFPA 70. Always use appropriate circuit protection
on any conductor attached to a battery.
4. Connect the battery wiring to the controller rst and then connect the battery wiring to the battery.
5. Torque all terminal screws per the following:
Stranded Copper 90°C Wire
Wire Size AWG Rated Torque (in-lbs)
10 20
8 25
6 35
4 35
With battery power attached, the controller should power up and display information. Connect the solar wiring to the controller and
remove the opaque material from the solar array. The negative solar array and battery wiring must be connected directly to the con-
troller for proper operation. Do not connect the negative solar array or negative battery controller wiring to the chassis of the vehicle.
6. Mounting the GP-PWM-30-UL. Mount the GP-PWM-30-UL to the wall using the included four mounting screws.
IMPORTANT: You must set the battery type on the GP-PWM-30-UL before you begin to use the controller (follow steps in Section 7).
The default battery setting is for AGM/LiFePO4 batteries.
Congratulations, your GP-PWM-30-UL should now be operational. If the battery power is low and the solar array is producing power,
your battery should begin to charge.
7. Re-torque: After 30 days of operation, re-torque all terminal screws to ensure the wires are properly secured to the controller.
WARNING: This unit is not provided with a GFDI device. This charge controller must be used with an external GFDI device
as required by Article 690 of the National Electric Code for the installation location.
7. WIRING DIAGRAMS
The GP-PWM-30-UL Maximum 37.5A rating is based on a 30-amp total maximum short circuit current rating (Isc) from the solar modules
nameplate ratings. The National Electric Code species the PV equipment/system rating to be 125% of the maximum Isc from the PV
module ratings (1.25 times 30 = 37.5A). E.G. Three modules in parallel with an Isc of 7 amps each equal a total Isc input of 21 amps.
When selecting PV modules for use with the GP-PWM-30-UL do not exceed a total nameplate Isc current of 30A. Solar modules list
the Isc amps on their nameplate label.

gpelectric.com | [page 9]
WIRING DIAGRAMS
7.1 CHARGING ONLY ONE BATTERY
Use the following wiring diagram if you are using the GP-PWM-30-UL to charge only one battery. Connect your battery to the battery
1 terminals on the solar controller.
The controller will not work unless there is a battery connected to the Battery 1 terminals.
WARNING: When the photovoltaic (solar) array is exposed to light, it supplies a dc voltage to this equipment.
7.2 CHARGING TWO BATTERIES
Use the following wiring diagram if you are using the GP-PWM-30-UL to charge two separate battery banks. Connect battery bank 1
to the battery 1 terminals and battery bank 2 to the battery 2 terminals on the back of the solar controller.
IMPORTANT: Ensure your primary/permanent battery (house bank) is connected to the battery 1 terminals. Connect your secondary
battery to battery 2 terminals only. Your permanent battery (battery 1) will receive the full current rst. Once battery 1 is fully charged,
current will be available to charge battery 2.
The controller will not work unless there is a battery connected to the battery 1 terminals.
Note
Note
The fuse or breaker
used should be no larg-
er than 50 amps
The fuse or breaker used should be no larger than 50 amps
Optional

[page 10] | gpelectric.com
8. OPERATING INSTRUCTIONS
WARNING: When the photovoltaic (solar) array is exposed to light, it supplies a dc voltage to this equipment.
8. OPERATING INSTRUCTIONS
8.1 POWER UP
When the GP-PWM-30-UL is connected to the battery, the controller will go into Power Up mode.
Icons Displayed: All segments of the numerical display; Backlight blinks.
Depending on the battery voltage when the GP-PWM-30-UL Power Up occurs, the controller
may do a Boost Charge or quickly go into Float Charge. The Charging Prole selected will
commence the following day after a Power Up (refer to the Charging Prole Chart on page
17-18 for more details).
8.2 SETTING THE BATTERY CHARGING PROFILE
Setting Battery 1
To set the battery type for battery bank 1, hold the B Button
for 3 seconds. When the display shows a blinking number 1,
release the B Button.
Refer to the Battery Charge Prole Chart below for details on
each prole.
Next, select the charging prole of battery bank 1 by pressing
the B Button to toggle through the prole options: Sealed/Gel,
AGM, Flooded, or LFP.
To conrm the battery prole, press and hold the A Button for
3 seconds.

gpelectric.com | [page 11]
Setting Battery 2
If you have a second battery bank connected, the controller will
immediately prompt you to set the battery type for Battery 2
with a blinking number 2.
If there is not a second battery bank connected to the controller, or if the second battery bank is connected with reverse
polarity, the controller will not prompt you to select battery type for Battery 2, and no status information will be displayed
on the LCD screen.
To select the charging prole of battery bank 2, press the B
Button to toggle through the prole options: Sealed/Gel, AGM,
Flooded, or LFP.
To conrm the battery prole, press and hold the A Button for
3 seconds.
Non-volatile memory: Any settings made on the GP-PWM-30-
UL will be saved even when the power has been disconnected
from the controller.
8.3 BATTERY CHARGING PROFILE CHART
OPERATING INSTRUCTIONS
Note

[page 12] | gpelectric.com
BATTERY TYPE SEALED/GEL AGM FLOODED LFP
Float Charge @ 25°C: 13.7V (+/- 0.1V) N/A
Bulk/Absorption Charge @ 25°C:
Set to 30 minutes every morning. Applied for 2 hours if
the battery voltage drops below 12.3 volts.
14.1V (+/- 0.1V) 14.4V (+/- 0.1V) 14.4V (+/- 0.1V) N/A
Equalization Charge @ 25°C:
Applied for 2 hours every 28 days and if the battery voltage
drops below 12.1 volts.
N/A N/A 14.9V (+/-0.1V) N/A
Absorption Charge voltage for LiFePO4:
Set to 30 minutes every morning
N/A 14.4VDC
Float Charge voltage for LiFePO4: N/A 14.0VDC
Temperature Compensation: -24mV/K None
If a charging cycle is unable to complete in a single day, it will continue the following day. The terms SEALED/GEL, AGM, FLOODED
and LFP (LITHIUM) are generic battery designations. Choose the charging prole that works best with your battery manufacturer’s
recommendations.
If PV power is insufcient or too many loads are drawing power from the battery, the controller will not be able to charge the battery
to the target charging voltage.
Auto Equalize: The GP-PWM-30-SB has an automatic equalize feature that will charge and recondition your batteries at least once a
month at a higher voltage to ensure that any excess sulfation is removed.
This mode should not be entered unless you are using a ooded battery.
8.4 MAXIMUM POWER BOOST TECHNOLOGYTM
Maximum Power Boost Technology™ (MPBT) allows you to override the normal charging algorithm of the solar controller. MPBT is
designed to be used before the end of the day, if you know you will require many loads through the night. This feature can also be
used when you have just installed the solar controller, to put batteries on a boost charge up to 14.4 VDC (Flooded, AGM and LFP)
(14.1 VDC for Sealed/Gel) right away.
To activate, hold the MAX BOOST Button for 3 seconds. As
long as there is full sunlight present, your battery voltage will
be boosted (to 14.4 VDC for Flooded, AGM and LFP; and 14.1
VDC for SEALED/GEL) for 30 minutes regardless of the battery’s
state of charge.
Icons Displayed: BOOST; Battery Symbol
In older controllers, the BOOST text icon will remain on until the
controller can maintain a Boost charge voltage for 30 cumulative
minutes. In newer controllers, the BOOST text icon will only ap-
pear while the controller is maintaining a Boost charge voltage.
IMPORTANT: Do not use the Maximum Power Boost function more than twice a day as it could damage your lead acid batteries due
to gassing. Sustained high voltages decrease lithium battery lifespan.
OPERATING INSTRUCTIONS
Note

gpelectric.com | [page 13]
If sunlight is insufcient or not available, completing Max Power Boost may take much longer than 30 minutes from the
time of the button press. Max Power Boost and the BOOST icon cannot be turned off by pressing the Max BOOST button
8.5 VIEWING THE CONTROLLER DISPLAY INFORMATION
GP-PWM-30-UL has two modes to watch the display information,
manual and auto scroll.
You can change between the two modes by holding down the
A Button for 3 seconds.
Mode 1: Manually Scroll Through Display Information
Battery 1 Status Values
To toggle between Battery Voltage, Charging Current and Battery
State of Charge (SOC) for Battery 1 and 2, press the B Button.
Push the B Button to show the voltage for Battery 1.
Icons Displayed: Battery SOC, Volt Symbol (V), Symbol 1
Push the B Button to show the PV charging current for battery
1. The GP-PWM-30-UL will begin to limit the current as Battery
1 reaches a full charge. The current that is not used for Battery
1, is used to charge Battery 2.
Icons Displayed: Arrow, Ampere Symbol (A), Battery SOC,
Symbol 1
OPERATING INSTRUCTIONS
Note

[page 14] | gpelectric.com
The battery state of charge is shown as a percentage.
Icons Displayed: Battery SOC, Percent Symbol (%), Symbol 1
A value of 100% will only be displayed after a Boost or Equalize
charge completes.
Battery 2 Status Values
Push the B Button to show the battery 2 voltage.
Icons Displayed: Battery SOC, Volt Symbol (V),
Symbol 2
This will only be displayed if there are two battery banks con-
nected and battery bank 2 is connected with correct polarity.
Push the B Button to show the PV charging current for battery
2. The GP-PWM-30-UL will begin to limit the current as the
battery 2 reaches a full charge.
Icons Displayed: Arrow, Ampere Symbol, Battery SOC, Symbol 2
OPERATING INSTRUCTIONS

gpelectric.com | [page 15]
The battery state of charge is shown as a percentage.
Icons Displayed: Battery SOC, Percent Symbol (%), Symbol 2
Mode 2: Automatically Change Display Information
You can select the auto mode by holding down the A Button for 3 seconds.
The display shows the same information as in Mode 1 but changes the display automatically every 8 seconds between following
information:
Battery 1: Voltage; PV Charging Current; Battery State of Charge (SOC)
Battery 2: Voltage; PV Charging Current; Battery State of Charge (SOC)
If Battery 2 is not connected, the Controller changes only the information for Battery 1.
8.6 RESETTING THE AMPERE HOURS CHARGED
To reset the count of ampere hours charged, use the Go Power!
Connect app (Bluetooth® enabled version only).
OPERATING INSTRUCTIONS

[page 16] | gpelectric.com
8.7 ERRORS
OVER VOLTAGE
If the GP-PWM-30-UL experiences a battery over voltage (>15.5
VDC) on battery bank 1, the controller will stop operating, and
the display will begin to ash with all icons. The controller will
resume operating when the voltage drops to a normal level
<15.5 VDC.
Icons Displayed: All symbols
The controller does not display over voltage on battery 2.
LOW VOLTAGE
Low battery 1: If the SOC of battery bank 1 reaches 0%, the
battery SOC symbol will show the text “LOW” beneath it. The
controller will continue operating in this condition and will only
stop operating if the voltage of Battery 1 drops below 9.0 VDC.
Low battery 2: If there are two battery banks connected and
the SOC of battery bank 2 reaches 0%, the battery SOC symbol
will show the text “LOW” beneath it. The controller will continue
operating in this condition and will only stop operating if the
voltage of Battery 1 drops below 9.0 VDC (this is because the
GP-PWM-30-UL is powered by Battery 1).
Icons Displayed: Battery SOC Symbol, LOW, Symbol 1 or 2
Note
OPERATING INSTRUCTIONS

gpelectric.com | [page 17]
Battery 1 Reverse Polarity
If the GP-PWM-30-UL senses reverse polarity on battery 1, the controller will stop operating, beep continuously and display POL. The
controller will resume operating when the error is cleared.
Icons Displayed: POL
9. DISPLAY SYMBOLS
BATTERY 1
SYMBOLS INDICATOR FOR
Day Time: PV Charge Current
Night Time
Battery Voltage
Battery State of Charge
SEALED Sealed/Gel
AGM AGM/LFP
FLOODED Flooded
LFP Lithium Iron Phosphate
9. DISPLAY SYMBOLS

[page 18] | gpelectric.com
BATTERY 2
SYMBOLS INDICATOR FOR
Day Time: PV Charge Current
Night Time
Battery Voltage
Battery State of Charge
SEALED Sealed/Gel
AGM AGM/LFP
FLOODED Flooded
LFP Lithium Iron Phosphate
OTHER SYMBOLS
USB charger ON
(when charger is OFF, no symbol will show)
Inverter on
(Can only be used when an inverter is hardwired. See Section 10.
When inverter is off, no symbol shows)
Flashing: Controller ready to pair
Steady-on: Controller and mobile device connected via Bluetooth®
communication
BOOST Max Power Boost activated, Boost charge incomplete
LOW Battery 1 / 2 voltage is lower than 11.0 VDC
Whole display will start to blink Battery 1 voltage > 15.5 VDC
No Symbol Battery 2 voltage >15.5 VDC
POL Battery 1 reverse polarity
DISPLAY SYMBOLS

gpelectric.com | [page 19]
BATTERY STATE OF CHARGE
SYMBOLS BATTERY VOLTAGE
Shows only after full Boost or Equalization Cycle
>= 12.6V
>= 11.8 -12.6V
> 11.0 -11.8V
<= 11.0V
100% Shows only after full Boost or Equalization Cycle
< 12.8V and > 11.0V
0% <= 11.0V
10. INVERTER CONTROL ON/OFF
The following Go Power!® inverters can be turned on/off through the GP-PWM-30-UL when a modular 6p4c RJ11 type connector is
used (included with an optional Go Power!®inverter remote):
- GP-ISW700-12 - GP-ISW1500-12
- GP-ISW1000-12 - GP-ISW2000-12
- GP-ISW1500-TS
*The GP-SW1500 Inverter is not compatible.
Note
DISPLAY SYMBOLS

[page 20] | gpelectric.com
First, connect the inverter directly to the battery (follow the installation instructions
included with the inverter).
Then, connect the modular cable (found in the inverter remote box) to the re-
mote terminal of the inverter and to the remote terminal of the GP-PWM-30-UL
(marked with an AC Plug symbol).
Please change the switch of the inverter to Position 2 (Remote controlled).
Now you can turn the connected inverter on or off by holding down the AC Symbol Button for 3 seconds.
The inverter is enabled when the AC plug symbol appears on
the display and is off when it disappears.
An automatic inverter low voltage disconnect (LVD) will be im-
plemented in the LFP prole when the AC icon is active and the
battery falls below 11.0V. The inverter will be reconnected once
the battery has charged above 12.4V.
If the inverter is switched on by the AC button but LVD is recog-
nized, then the AC symbol will ash. If the inverter is switched
off by the AC button and/or by LVD, then the AC symbol will
be off. If the inverter is switched on by the AC button and not
switched off by LVD, then the AC symbol will be on.
INVERTER CONTROL ON/OFF