Gree GRS-1.5/D150ANbA-K, Service Manual

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GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
13
1
Display of Common Operation Modes:
HOTWATER, SAVE, PRESET and
NIGHT mode.
7 Display of Keypad Lock function.
2
Display of actual water temperature,
temperature setpoint, error codes, and
running parameters.
8 Display of defrost running
3
Display of system time, preset time,
timer setting and running parameters.
9 Display of antifreeze running
4
Display of hot water volume (this
function is unavailable to models with
single temperature sensor).
10 Display of e-heater running
5
Display of the sub-controller. (This
function is reserved.)
11
Display of CYCLE, HOTTER,
SUNFLOWER, STAYOUT and VACATION
function (the HOTTER function may not work for
models without an electrical heater).
6 Display of operating/standby. 12 Display of RAPID and i-know function.
3 Query Parameters
This function is provided for the debugging personnel to query running status of the unit. After
pressing and holding MODE+
▲
button for 5s, the parameter display area blinks. 00 is displayed by default.
The
▲ and ▼ buttons can be pressed to switch the query item.
Query codes are described in the following table.
Query Code
Query Parameter
00 00 by default
01 Communication protocol version
03 Temperature of the upper temperature sensor of the water tank (detected by the mainboard)
04 Temperature of the outdoor ambient temperature sensor
06 Temperature of the air intake temperature sensor
08 Temperature of the air exhaust temperature sensor
13 Temperature of the temperature sensor for outdoor pipe
16 Temperature of the lower temperature sensor of the water tank (detected by the mainboard)
17
Display of single or dual temperature sensor (01 indicates single temperature sensor and 02
indicates dual temperature sensor)