T-M50 / T-M50 ASME Service Manual
Ver. 1.05
50
CONFIDENTIAL
Description of mode numbers in “Diagnostics Mode”
Mode #
Whole multi-unit system information (#0)
Unit information (#1 to #10)
1
Total system rate
0 to 9,999 (×0.1 GPM) Total operation time
0 to 9,999 (×10 hours)
2
N/A
ON/OFF cycles
0 to 9,999 (×100 times)
3
Quantity of connected
T-M50’s
0 to 10 (units)
Fan motor speed
0 to 9,999 (rpm)
4
Priority T-M50 number 0 to 10
Inlet temperature
5
Quantity of operational
T-M50’s
0 to 10 (units)
Output temperature
6
Set temperature
100 to 185 °F
Mixing temperature
32 to 210 (°F).
Over 210°F=E5,
Under 32°F=E0
7
Operation time during
current rotation
0 to 999 (minutes)
Air-Fuel
ratio
rod
current
0 to 999 (×0.1μA)
8
ON/OFF cycles during
current rotation
0 to 999 (times)
Flow rate
0 to 999 (×0.1 GPM)
9
Bypass valve position 0 to 9,999, closed position = 0
10
Ratio of hot water and
cold water
0 to 999 (%)
11
N / A
Error code history: displays most recent error code
12 Inlet temperature of
the priority unit
0 to 999
°F
Error code history: displays 2
nd
most recent error code
13 Mixing temperature of
the priority unit
0 to 999
°F
Error code history: displays 3
rd
most recent error code
14
Clears memory in error code history*
15
N / A
16
Air-Fuel ratio stage
0 to 16, Normal condition = 6
17
・・
25
N / A
26
Current
value
of
Proportional valve
0 to 9,999 (×0.1μA)
27
The
number
of
Combustion stages
(T-M50 has 4 stages
for combustion.)
“1” means 1
st
stage
“2” means 2
nd
stage
“3” means 3
rd
stage
“4” means 4
th
stage
“0” means No burning
28
Energization time of
Unit
0 to 9,999 (×10 hour)
29
Estimated
output
from Computer board 0 to 9,999 (×100 BTU)
30
Actual output of Unit 0 to 9,999 (×100 BTU)
31
Integrating flow of
Unit
0 to 9,999 (×1000 gallon)
32
N / A
Integrating output of
Unit
0 to 9,999 MBTU/h
* Simultaneously press the “INFORMATION” button and the “BUZZER” buttons on the remote controller while in
mode# 14 for at least 5 seconds to completely clear the memory in the error code history.
