fan_pwm_speed reports 30% continuously

[dwtaylornz]

Hi everyone, is anyone else is having issues finding fan_pwm_speed on pip max?

I have a pip 8048 max and i can hear the fans revving up and down, i've been capturing the output for several months and fan_pwm_speed only ever reports 30%

The PI30MAX protocol doesn't appear to show any fan speed output;

# mpp-solar -p /dev/ttyS0 --porttype serial -P PI30MAX --getstatus 
Command: QPIGS2 - General Status Parameters inquiry 2
------------------------------------------------------------
Parameter                       Value           Unit
ac_input_voltage                236.7           V   
ac_input_frequency              49.9            Hz  
ac_output_voltage               236.7           V   
ac_output_frequency             49.9            Hz  
ac_output_apparent_power        524             VA  
ac_output_active_power          524             W   
ac_output_load                  6               %   
bus_voltage                     391             V   
battery_voltage                 0.0             V   
battery_charging_current        0               A   
battery_capacity                0               %   
inverter_heat_sink_temperature  46              °C  
pv1_input_current               1.4             A   
pv1_input_voltage               207.5           V   
battery_voltage_from_scc        0.0             V   
battery_discharge_current       0               A   
is_sbu_priority_version_added   0               bool
is_configuration_changed        0               bool
is_scc_firmware_updated         0               bool
is_load_on                      1               bool
is_battery_voltage_to_steady_while_charging     0               bool
is_charging_on                  0               bool
is_scc_charging_on              0               bool
is_ac_charging_on               0               bool
battery_voltage_offset_for_fans_on      0               10mV
eeprom_version                  0                   
pv1_charging_power              295             W   
is_charging_to_float            0               bool
is_switched_on                  1               bool
is_dustproof_installed          0               bool
pv2_input_current               1.1             A   
pv2_input_voltage               127.3           V   
pv2_charging_power              152             W   
unknown_value_in_response_3   

defaulting back to PI30 protocol i can see fan_pwn_speed, but it always reports 30% ;
(i also get temps from this output, seems to be excluded from PI30MAX)

# mpp-solar -p /dev/ttyS0 --porttype serial --getstatus  
Command: Q1 - Q1 query
------------------------------------------------------------
Parameter                       Value           Unit
ac_input_voltage                237.3           V   
ac_input_frequency              50.0            Hz  
ac_output_voltage               237.3           V   
ac_output_frequency             50.0            Hz  
ac_output_apparent_power        522             VA  
ac_output_active_power          508             W   
ac_output_load                  6               %   
bus_voltage                     391             V   
battery_voltage                 0.0             V   
battery_charging_current        0               A   
battery_capacity                0               %   
inverter_heat_sink_temperature  44              °C  
pv_input_current_for_battery    1.3             A   
pv_input_voltage                206.4           V   
battery_voltage_from_scc        0.0             V   
battery_discharge_current       0               A   
is_sbu_priority_version_added   0               bool
is_configuration_changed        0               bool
is_scc_firmware_updated         0               bool
is_load_on                      1               bool
is_battery_voltage_to_steady_while_charging     0               bool
is_charging_on                  0               bool
is_scc_charging_on              0               bool
is_ac_charging_on               0               bool
rsv1                            0               A   
rsv2                            0               A   
pv_input_power                  275             W   
is_charging_to_float            0               bool
is_switched_on                  1               bool
is_reserved                     0               bool
time_until_the_end_of_absorb_charging   1               sec 
time_until_the_end_of_float_charging    5               sec 
scc_flag                        SCC not communicating?      
allowscconflag                  00                  
chargeaveragecurrent            00                  
scc_pwm_temperature             40              °C  
inverter_temperature            44              °C  
battery_temperature             31              °C  
transformer_temperature         37              °C  
gpio13                          2                   
fan_lock_status                 Not locked          
not_used                        000                 
fan_pwm_speed                   30              Percent
scc_charge_power                308             W   
parallel_warning??              0000                
sync_frequency                  0.0                 
inverter_charge_status          nocharging          
unknown_value_in_response_17    0                   
unknown_value_in_response_18    060                 
unknown_value_in_response_19    030                 
unknown_value_in_response_20    060                 
unknown_value_in_response_21    030                 
unknown_value_in_response_22    58.40               
unknown_value_in_response_23    000                 
unknown_value_in_response_24    120                 
unknown_value_in_response_25    0                   
unknown_value_in_response_26    0000          

ideas?

[jblance]

Note Q1 is an undocumented command, so the results may be incorrect or at least incorrectly named/decoded.
I don't see temp or fan speed in the protocol docs for the 8048. Does watchpower give this data?

[dwtaylornz]

i cannot see it in watchpower, hmm. happy to leave it.