CODE

DESCRIPTION

152

Minimum water temperature parameter was

 

greater than time of day setpoint

153

Minimum pressure parameter was greater than

 

setpoint

154

Minimum pressure parameter was greater than

 

time of day setpoint

155

CH modulation rate source parameter was invalid

156

Steam modulation rate source parameter was

 

invalid

 

DHW Parameter Errors

157

DHW demand source was invalid

158

DHW P-gain was invalid

159

DHW I-gain was invalid

160

DHW D-gain was invalid

161

DHW OFF hysteresis was invalid

162

DHW ON hysteresis was invalid

163

DHW hysteresis step time was invalid

164

DHW sensor type was invalid

165

Inlet sensor type was invalid for DHW

166

Outlet sensor type was invalid for DHW

167

DHW Storage OFF hysteresis was invalid

168

DHW Storage ON hysteresis was invalid

169

DHW modulation sensor type was invalid

170

DHW modulation sensor was not compatible for

 

AUTO mode

 

DHW Operation Faults

171

DHW control was suspended due to fault

172

DHW temperature was invalid

173

DHW inlet temperature was invalid

174

DHW outlet temperature was invalid

175

DHW high limit must be disabled for AUTO mode

176

DHW sensor type was not compatible for AUTO

 

mode

177

DHW priority source setting was invalid

178

DHW priority method setting was invalid

 

CH Operation Faults (continued)

179

CH S5 (J8 terminal 11) sensor was invalid

180

CH inlet temperature was invalid

181

CH S10 (J10 terminal 7) sensor was invalid

182

Lead Lag CH setpoint source was invalid

 

Lead Lag Parameter errors

183

Lead Lag P-gain was invalid

184

Lead Lag I-gain was invalid

185

Lead Lag D-gain was invalid

186

Lead Lag OFF hysteresis was invalid

187

Lead Lag ON hysteresis was invalid

188

Lead Lag slave enable was invalid

189

Lead Lag hysteresis step time was invalid

190

No Lead lag Modbus port was assigned

CODE

DESCRIPTION

191

Lead Lag base load common setting was invalid

192

Lead Lag DHW demand switch setting was

193

Lead Lag Mix demand switch setting was invalid

194

Lead Lag modulation sensor setting was invalid

195

Lead Lag backup modulation sensor setting was

 

invalid

196

Lead Lag slave mode setting was invalid

197

Lead Lag rate allocation setting was invalid

198

Lead selection setting was invalid

199

Lag selection setting was invalid

200

Lead Lag slave return setting was invalid

201

Lead Lag add stage method setting was invalid

202

STAT may not be a Lead Lag CH demand source

 

when Remote Stat is enabled

203

Lead Lag base load rate setting was invalid

 

Lead Lag Operation Faults

204

Lead Lag master was suspended due to fault

205

Lead Lag slave was suspended due to fault

206

Lead Lag header temperature was invalid

207

Lead Lag was suspended due to no enabled

 

Program Module installed

208

Lead Lag slave session has timed out

209

Too many Lead Lag slaves were detected

210

Lead Lag slave was discovered

211

Incompatible Lead Lag slave was discovered

212

No base load rate was set for Lead Lag slave

213

Lead Lag slave unable to fire before demand to

 

fire delay expired

214

Adding Lead Lag slave aborted due to add

 

requirement change

215

No Lead Lag slaves available to service demand

216

No Lead Lag active service was set due to

 

demand priority conflicts

217

No Lead Lag add stage method was specified

218

No Lead Lag drop stage method was specified

219

Using backup lead lag header sensor due to

 

sensor failure

 

Frost Protection Faults

220

Lead Lag frost protection rate was invalid

221

Lead Lag drop stage method setting was invalid

222

CH frost protection temperature was invalid

223

CH frost protection inlet temperature was invalid

224

DHW frost protection temperature was invalid

225-226

RESERVED

227

DHW priority override time was not derated due to

 

invalid outdoor temperature

228

Warm weather shutdown was not checked due to

 

invalid outdoor temperature

229

Lead Lag slave communication timeout

230

RESERVED

71

Page 71
Image 71
A.O. Smith 2000, 3400, 2600, 1700 instruction manual Code Description

3400, 1700, 2000, 2600 specifications

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